# Hero Circle

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***Hero Circle*** (Korean: 히어로 써클) is a [Korean animated series](/source/South_Korean_animation) produced by Studio TNT and the [Educational Broadcasting System](/source/Educational_Broadcasting_System).[1][2][3][4] The series aired on EBS1 every Monday and Tuesday at 5:45 pm, beginning on June 29, 2020. It aired on [Tooniverse](/source/Tooniverse) every Wednesday at 6 pm, starting on July 29, 2020.[5] Season 2 was first broadcast on June 29, 2022, airing every Wednesday at 7 pm, and later at 5:30 pm.[6][7]

## Plot

The series is set at a high school in a futuristic city called Popo School (named Cityside Academy in the English dub), following the misadventures of a group of five kids with superpowers called the "Hero Circle". They include Teo, the mischievous leader of the club who has [telekinesis](/source/Telekinesis); Vincent, a timid [vampire](/source/Vampire) who can transform into a bat; Sena, a cynical and competitive girl who can run at the [speed of light](/source/Speed_of_light); Lucky, a cheerful [angel](/source/Angel); and Dino, a [scientist](/source/Scientist) who transforms into a [dinosaur](/source/Dinosaur) when he is angry.[1][8]

Season 1 shows incidents that occur between supporting characters in various clubs at the school, with other students coming to the Hero Circle for help. Season 2 further expands the world view, with episodes in which the Hero Circle competes in sports competitions with a rival school named Caesar School, takes a [time machine](/source/Time_machine) to the dinosaur era, and confronts real villains.[9]

## Characters

### Main characters

- **Teo** () (voiced by Cho Hyun-jung) is the mischievous, self-appointed leader of the Hero Circle. He can freely move light objects using [telekinesis](/source/Telekinesis). Because he is always motivated, he expands his work and gets criticized by his friends, but he is not discouraged and is always full of confidence.[10]
- **Sena** () (voiced by [Yeo Min-jeong](/source/Yeo_Min-jeong)) is a blue-haired girl and a member of the Hero Circle. She is a competitive person with a burning desire to win when her pride is at stake. She uses her ability to move at the [speed of light](/source/Speed_of_light) and excellent athletic skills to help others. She is very interested in [social networking services](/source/Social_networking_services), spending most of her time on her [cell phone](/source/Cell_phone).[11]
- **Vincent** () (voiced by Yang Jeong-hwa) is a timid and cowardly [vampire](/source/Vampire), childhood friend of Teo and a member of the Hero Circle. He has the ability of immortality, but does not want to fight anyone. Unlike ordinary vampires, he is a non-vampire and a pacifist who gets along with humans. He can also transform into a little [bat](/source/Bat).[12] Marvin was originally planned to be a main character with the ability to become invisible, but was later replaced with Vincent, who inherits Marvin's timid personality.
- **Lucky** () (voiced by Jeon Hae-ri) is a little [angel](/source/Angel), childhood friend of Teo and Vincent, and a member of the Hero Circle, who is always happy and full of laughter. She remains cheerful and positive regardless of the situation or events occurring. She does whatever she wants, which sometimes leads to her getting into trouble. Whenever she is in danger, her omnipotent father from [Heaven](/source/Heaven), [God](/source/God), appears to help her. However, Lucky herself does not know this fact. She likes fluffy things.
- **Dino** () (voiced by Kim Eun-ah) is a cynical genius [scientist](/source/Scientist) and a member of the Hero Circle. He has great intelligence, excels in school, and often creates inventions. He is usually calm, but when he gets angry, he transforms into a giant [dinosaur](/source/Dinosaur). According to early concepts, he accidentally gained this ability while trying to develop a height-growth potion.

### Science Circle

- **Teslee** () (voiced by Jeon Tae-yeol) is the leader of the Science Circle. He always loses to Dino in exam scores and is in a perennial Kong-line (), coming in 2nd place.
- **Ed** and **Ned** () (voiced by Kim Myeong-jun and [Um Sang-hyun](/source/Um_Sang-hyun)) are members of the Science Circle.

### Garden Circle

- **Debbie** () (voiced by Jang Ye-na) is the leader of the Garden Circle, who resembles [Anne Shirley](/source/Anne_Shirley). She catches students who ruin or invade the club and forces them to work in the garden, using them as slaves.[13]

### Robot Circle

- **Black**, **Red** and **Blue** () (voiced by Cheon Ji-seon (Black), Kim Eun-ah (Red; first voice), Jeon Hae-ri (Red; second voice) and [Lee Sang-jun](/source/Lee_Sang-jun_(actor)) (Blue)) are members of the Robot Circle, with Red as the leader.
- **Kane** () (voiced by [Um Sang-hyun](/source/Um_Sang-hyun)) is a member of the Robot Circle. He is said to have previously participated in a [track and field](/source/Track_and_field) competition with Caesar School, but lost and transferred to the school. He faces Teo, Sena and Vincent alone, using various fouls and gaining the upper-hand with his flying abilities, but is defeated by Sena. He quits, effectively giving up on track and field. However, he is scouted by the Robot Circle, who was watching the game, and he joins the club in a green position.

### Manga Circle

- **Bonnie** () (voiced by Kim Eun-ah) is the daughter of a vampire hunter and the leader of the Manga Circle. She has a [fear of bats](/source/Fear_of_bats). In season 2, she has a crush on Vlad, Vincent's cousin, drawing a manga about him and herself, although she denies it.
- **Mako** and **Yuko** () (voiced by Cheon Ji-seon) are Japanese twin sisters and members of the Manga Circle. Mako wears square glasses, while Yuko wears round glasses. They use [honorifics](/source/Honorifics) for Bonnie, the club's leader, and have a good relationship with her. They are shown to like [heavy metal](/source/Heavy_metal_music), as they are seen waving cheering sticks during band performances.

### Band Circle

- **Marvin** () (voiced by Kim Myeong-jun) is the [lead vocalist](/source/Lead_vocalist) and [guitarist](/source/Guitarist) of the Band Circle. He was originally planned as a main character in the Hero Circle, with the ability to turn invisible. Despite being in a band, he would have suffered from stage fright and could only perform properly when he is invisible. He was later replaced with Vincent, who inherits Marvin's timid personality, and the invisibility concept was used as the name of one of his songs, "Invisible Man". He has a crush on Yuko from the Manga Circle.
- **Duke**, **Chester** and **Simon** () (voiced by Jeon Tae-yeol, [Lee Sang-jun](/source/Lee_Sang-jun_(actor)) and [Um Sang-hyun](/source/Um_Sang-hyun)) are members of the Band Circle, with Chester as the leader.

### Computer Circle

- **Bow Jr.** () is Bowstein's mischievous son and the leader of the Computer Circle. Due to becoming less talkative, he communicates via text message.
- **Timmy**, **Andy** and **Choco Nara Strawberry Gongju** () (voiced by [Um Sang-hyun](/source/Um_Sang-hyun) (Timmy; first voice), Cheon Ji-seon (Andy), Jeon Hae-ri (Choco Nara Strawberry Gongju) and Park Joo-gwang (Timmy; second voice)) are a trio of [computer science](/source/Computer_science) [truant](/source/Truant) students who hack into the school system. Dino tracks them down, and in the end, Timmy and Andy are captured by Sena, while Strawberry Gongju escapes. Timmy uses the nickname **Power Supreme Genius** () online and an avatar with blue hair and a mask; Andy uses the nickname **Mr. Baby Duck** () and a green [duck](/source/Duck) avatar; and Strawberry Gongju's real name is unknown, but she uses a [princess](/source/Princess) avatar in a crown and dress with twin tails. Strawberry Gongju's name is based on the Korean chicken and pizza brand Pizza Nara Chicken Gongju.

### Detective Circle

- **Doyle** () (voiced by Jeon Hae-ri) is a detective and the leader of the Detective Circle. He is named after [Arthur Conan Doyle](/source/Arthur_Conan_Doyle), is a parody of [Sherlock Holmes](/source/Sherlock_Holmes), and wears a bowtie similar to [Shinichi Kudo](/source/Jimmy_Kudo) from *[Detective Conan](/source/Case_Closed)*.
- **Kin** () (voiced by Park Joo-gwang) is a talking [parrot](/source/Parrot) owned by Doyle.

### Occult Circle

- **Occul** and **Cult** () (voiced by [Um Sang-hyun](/source/Um_Sang-hyun) and Jeon Tae-yeol) are members of the Occult Circle, who summon beings from another world using a book. Occul has orange hair, and Cult has turquoise hair.

### Demon World

- **Cala** and **Mitty** () (voiced by Yoo Bo-ra and Lee Bo-yong), also known as the **Calamity Sisters** (Korean: 칼라미티 시스터즈), are a duo of disastrous [fairies](/source/Fairies) and [arch-nemeses](/source/Archenemy) of Lucky, who grant people's wishes in exchange for taking their souls.
- **Lilith** () (voiced by [Lee Ji-hyun](/source/Lee_Ji-hyun_(actress,_born_1983))) is the princess, [arch-nemesis](/source/Archenemy) of Teo and heiress of the Demon World. She aims to bring bad luck to people and make them unhappy.
- **Demon** () (voiced by Jeon Tae-yeol) is the king of the Demon World and Lilith's father. He is based on [Hades](/source/Hades) in [Greek mythology](/source/Greek_mythology).

### News Circle

- **Oliver** () (voiced by Shin Yong-woo) is a [newspaper editor](/source/Newspaper_editor) in the News Circle, who likes [grapes](/source/Grapes).

### Cheerleader Circle

- **Cindy**, **Stephanie** and **Wendy** () (voiced by Kim A-rong (Cindy; first voice), [Yeo Min-jeong](/source/Yeo_Min-jeong) (Stephanie) and Cheon Ji-seon (Cindy; second voice, Wendy)) are a trio of [cheerleaders](/source/Cheerleaders) and members of the Cheerleader Circle, with Stephanie as the leader and sometimes an extra. The total number of club members is unknown. A fourth unnamed member is occasionally seen, finally appearing as a supporting character in episode 7 of season 2.

### Cooking Circle

- **Murphy** () (voiced by Jang Ye-na) is a [cafeteria](/source/Cafeteria) manager and the leader of the Cooking Circle.

### Game Circle

- **Eugene** () (voiced by Kim Chae-ha) is a calm, laidback boy and the leader of the Game Circle, who first appeared in episode 24. He wears a scouter, which is used as a scanner to detect Papa Cat's robot's weakness in the final episode of season 2. He also stores bigger items in his pocket, from [video game consoles](/source/Video_game_consoles) to game chips and even [remote controls](/source/Remote_controls).[14]
- **Steve** () (voiced by [Um Sang-hyun](/source/Um_Sang-hyun) (first voice) and [Lee Sang-jun](/source/Lee_Sang-jun_(actor)) (second voice)) is a fat boy and a member of the Game Circle, who collects figures as a hobby.[15] He appears as a missing member in the in-universe [virtual reality](/source/Virtual_reality) game called *Hero Fantasy*. Although his name was not revealed, fans called him "Steven" due to his appearance resembling that of [Steven Universe](/source/Steven_Universe_(character)). Studio TNT noticed this, and gave the character the name "Steve".

### Book Circle

- **Jennifer** () (voiced by Yang Jeong-hwa) is a blue-skinned [librarian](/source/Librarian) and the leader of the Book Circle. She first appeared in episode 20. Because of her gloomy atmosphere and mysterious return date announcements, she becomes the main character of ghost stories that circulate around Popo School. Jennifer personally goes to inform of books that are due, seemingly indicating her diligence in club activities. She appears in a ghostly manner throughout the episode until her identity is revealed. She is also revealed to be an acquaintance of the Occult Circle. In episode 19 of season 2, she comes to the Hero Circle for help because everyone is increasingly afraid of her. Everyone agrees that it would be good to change her image, so she goes to the Manga Circle for help. The Manga Circle changes her costume and makeup, giving her the pretty star cosplay of "Jupiter". However, because of the high synchronization rate, she becomes too popular, so she eventually goes back to her original state, thinking that her own appearance is better. Jennifer later becomes close to someone who had not been afraid of her before. It is not revealed who that person is, and only their silhouette is shown, but the silhouette and voice are obviously that of Eugene. The ending credits even reveal Eugene's voice actress Kim Chae-ha.

### Breeding Circle

- **Teddy** () (voiced by Kim A-rong) is a [lion](/source/Lion) who works in the Breeding Circle, and one of the two [anthropomorphic](/source/Anthropomorphism) animal students to attend Popo School, the other being Ketchop. He first appeared in episode 12 of season 2. He specializes in [parkour](/source/Parkour), and he catches a mother horned [rabbit](/source/Rabbit) several times bigger than himself using only tree vines.
- The **Horned Rabbits** () are rare animals raised in the Breeding Circle. They are called horned rabbits because theirs ears resemble horns. Unlike regular rabbits, they like to eat [mushrooms](/source/Mushrooms) instead of [carrots](/source/Carrots).

### Theater Circle

- **Charlie** () (voiced by Cheon Ji-seon) is a [theater director](/source/Theater_director) and the leader of the Theater Circle. She is also shown to be an actress, even when she is dying, becoming a different person when doing so. She casts the Hero Circle in the play, but they all have very bad acting skills. In response to the terrible reaction from the other students, she steps in as the real prince and revises the script, successfully finishing the play.
- **Harper** () (voiced by Jang Ye-na) is a boy with freckles and blond hair, who works in the Theater Circle. When Charlie speaks, he thinks that her voice is low, so he speaks on her behalf, but also speaks indirectly so that the listener does not feel bad. This does not really have much effect, except that it raises Charlie's blood pressure because she hears everything. He respects Charlie very much.

### Court Circle

- The **Judge** () (voiced by Kim Myeong-jun) appears in episode 16 of season 2. He is characterized by his haircut similar to that of [lawyers](/source/Lawyers) from [Commonwealth countries](/source/Commonwealth_of_Nations), and mostly acts as a quieting agent by striking down the gavel. The episode itself is a parody of the *[Ace Attorney](/source/Ace_Attorney)* series.

### Other characters

- **Bowstein** () (voiced by Park Joo-gwang) is a [robot](/source/Robot) [dog](/source/Dog) with a high [IQ](/source/IQ) and the [headmaster](/source/Headmaster) of Popo School. He tries to look like a stern principal in front of the students, but is the type that easily shows his emotions. He worries a lot about his son, Bow Jr., who has recently become less talkative. His name is a combination of "bow-wow" (the onomatopoeia of a dog barking) and [Albert Einstein](/source/Albert_Einstein).
- **S.A.M.** () (voiced by [Um Sang-hyun](/source/Um_Sang-hyun)) is a [robot](/source/Robot) who works as a teacher. He first appeared in episode 14. He is also cowardly; when Titch and his space pirates invade Popo School, he hides behind Bowstein when he confronts Titch, suggesting that they just report him. In episode 6 of season 2, he is revealed to have extraordinary cooking skills, due to his ability to absorb things with his body and having no sense of taste.
- **Ketchop** () (voiced by [Um Sang-hyun](/source/Um_Sang-hyun)) is a [cat](/source/Cat) and the lowest subordinate of Papa Cat. He infiltrates Popo School and creates an unofficial club called the Villain Square, where he operates secretly. Despite being a villain, rather than pushing the Hero Circle members, he often appears as a damaged or victimized figure. Ketchop is mistaken for looking like a cat, but is a real cat. He has a speech quirk where he ends most of his sentences with "~chop" (~촙), which he also uses when laughing. His name is based on "[ketchup](/source/Ketchup)", only with "o" in place of "u". He is quite good at cooking, as shown when he serves [hotteok](/source/Hotteok) to the students when they skip lunch, and appears as a hot dog vendor in the final episode of season 2. He assists Papa Cat during his attack on Popo School, but unlike Papa Cat, who flees after being defeated, he is arrested.
- **Papa Cat** () (voiced by Jeon Tae-yeol) is Ketchop's boss and the leader of an evil organization. He has a speech quirk where he ends most of his sentences with "~myo" (~묘). First appearing in episode 4, he appears occasionally whenever Ketchop contacts him, and he is surprisingly generous with him, such as listening to everything that Ketchop asks for, or telling Bow Jr. to educate him responsibly when he joins the Villain Square. He plays a major role in the final episode of season 2, where he uses a giant robot to attack Popo School, awakening it with a hacking chip that he received from Titch. His abilities include causing an earthquake with a simple jump, using [ultrasound](/source/Ultrasound) to incapacitate vampires, and even subduing Dino in his dinosaur form. However, the robot gradually gets damaged and pushed back by the students' continued attacks, and is defeated after the last attack by Cowman and Vlad. After his defeat, Papa Cat escapes, unlike Ketchop who is arrested by the police.
- The **Police Circle** () is only mentioned in the series' opening and do not appear in season 1, but actually make their first appearance in episode 16 of season 2. Their position is similar to that of the leader, with them arresting Teo and putting him in prison, but they are portrayed as having more powerful authority.
- **Cowman** () (voiced by [Um Sang-hyun](/source/Um_Sang-hyun)) is a famous [cow](/source/Cow) [superhero](/source/Superhero) who first appeared in episode 2. He becomes stronger by drinking [milk](/source/Milk). His catchphrase is "Justice is upheld!" ("정의는 지켜젖소~!") Cowman visits Popo School and conducts daily lessons for the Hero Circle. He is captured by some [squid](/source/Squid) monsters, along with Sena, who secretly followed him into battle, but defeats the monsters by powering up with the milk that Sena gave him. Afterward, he tells Bowstein that he brought the Hero Circle to school so that they won't get into trouble. Sena wears a Cowman costume for [Halloween](/source/Halloween) in episode 8 of season 2.
- **Hamkong** () (voiced by Kim A-rong) is a [hamster](/source/Hamster) who first appeared in episode 6, where Dino finds him in a trash can. While secretly playing with Hamkong, Teo accidentally throws him into a beaker filled with a height-growth potion, which causes him to grow into a giant hamster. He grows so big that Lucky ends up taking it to Heaven to raise. In episode 20 of season 2, he comes down to Earth with Lucky. Dino is running wild in his dinosaur form because the potion that would have made Hamkong return to his original size was destroyed by the sea monster's rampage. When Dino sees Hamkong, he shrinks to his original size.
- **Titch** () (voiced by Jeon Tae-yeol) is a [rat](/source/Rat) and the leader of a group of [space pirates](/source/Space_pirate). He first appeared in episode 14, where he and the pirates invade Popo School to find treasure. He is slightly smaller than Bowstein, and captures him and S.A.M. even after the latter defeats his subordinates with his [martial arts](/source/Martial_arts) skills. The Hero Circle knocks out one of Titch's subordinates and use his suit as a disguise to sneak aboard his ship to rescue Bowstein and S.A.M. Seeing Titch's fluffy mustache, Lucky tries to touch it, causing a commotion inside the Hero Circle's disguise, which ends with Dino transforming into a dinosaur, causing the ship to crash. Since Titch tells the "subordinate" to go and rest when he appears to be in bad condition (due to Sena escaping the suit) and calls the medical team (due to the commotion inside the suit), he seems to be surprisingly good at providing welfare.
- **Vlad** () (voiced by Shin Yong-woo) is Vincent's cousin, who first appeared in episode 16, where he visits Vincent and invites him to attend the Moonlight Party. He is a [vampire](/source/Vampire) with a handsome face and gentle personality who is kind to Vincent, as well as Teo, Sena and Bonnie (his enemy). He does not appear to transform into a bat like Vincent, but he uses teleportation, where he pulls over his cloak and disappears. He seems to be good at baking, as he comes out of the party holding a tray of cookies. In episode 3 of season 2, he is seen baking when talking to Vincent, and later distributes bread and cookies to the Hero Circle members. Aside from his gentle and kind behavior, he is quite good at fighting. He even had a record of battling with Bonnie's father, a professional [vampire hunter](/source/Vampire_hunter) in episode 18 of season 2, showing his ability to withstand an explosive thrown by the latter. In the final episode of season 2, when the Hero Circle is attacked by Papa Cat, he shows up with his vampire subordinates to break the defense barrier and cut off the giant robot's fist.
- **Graham** () is Teslee's [hamster](/source/Hamster) who first appeared in episode 17. Teslee plans to use him as a trap for Dino, knowing that cute animals are his weakness, but ends up falling for the hamster's cuteness.
- **God** () (voiced by [Um Sang-hyun](/source/Um_Sang-hyun)) is the god of Heaven and Lucky's father, who helps his daughter whenever she is in danger. He is based on [Zeus](/source/Zeus) from [Greek mythology](/source/Greek_mythology). He uses lightning as a weapon.
- **Pugnardo** () (voiced by [Lee Sang-jun](/source/Lee_Sang-jun_(actor))) is a [pug](/source/Pug) and the principal of Caesar School, and rival to Bowstein. He first appeared in episode 7 of season 2. He is a mean-spirited person who will do anything to win, including breaking rules and cheating. Due to having previously competed in a track and field competition with Popo School, he seems to be in conflict with the school. He and Bowstein have similar tastes in snacks.
- The **Vampire Hunter** () (voiced by [Lee Sang-jun](/source/Lee_Sang-jun_(actor))) is Bonnie's father and a professional [vampire hunter](/source/Vampire_hunter). He is so skilled that he can tell vampires apart by smell alone, and always carries a giant sword. He first appeared in episode 18 of season 2, where he stops by Popo School. There he realizes that Bonnie still dreams of becoming a hunter, unaware of her actual dreams of becoming a manga artist. He hates vampires so much that he does not even recognize the peace treaty. Because of this, when he kidnaps Vincent due to needing the vampire's guidance to head to the mansion where the vampires live, Vlad blocks him and tries to resolve the issue through peace. Then, when Vlad's movements suddenly slow down and he is pushed back, he laughs at him, but it turns out that Vlad was guarding Bonnie the whole time, and only retreats when Bonnie confesses that she does not want to become a hunter. At this moment, when he is about to change his perception of vampires a little by saying that he was indebted to Vlad, he sends a letter to Bonnie telling her that these were also the vampires' schemes and not to be fooled.

## Production

*Hero Circle* was originally planned as an English education video (complete with a comic adaptation) and made for a portfolio, shown on Studio TNT's website, but was made into a television series.[16] Later, a modified [pilot episode](/source/Pilot_episode) version was created, which was very similar to the final series. Several other lead characters were added, including Vincent and Bowstein.[17] The series' pitch was developed by Antony Norman Gusscott at Sprinkles on Top.[18] It was produced in [2D](/source/2D_animation) [FHD](/source/1080p) animation using [Toon Boom Harmony](/source/Toon_Boom_Harmony).[1][19][20][21] The music was produced and recorded at Soundscool.[22]

In 2017, Studio TNT participated in KNock 2017, an investment attraction briefing session.[23] The series won the Best Project Award at the Pre-Production Bootcamp hosted by the [Korea Creative Content Agency](/source/Korea_Creative_Content_Agency) in 2018, who selected the series as a domestic animation production support target in 2019.[24][25][26] It received much attention both domestically and internationally, including being selected for the EBS Co-Production Contest and advancing to the final stage of the 2018 Asia Animation Summit.[27][28][29][30][31][32] In 2019, Studio TNT signed a global distribution contract with American distributor Ryan Posey through the Kidscreen Summit held in [Miami](/source/Miami) in the [United States](/source/United_States).[5][33]

On November 14, 2020, news of Season 2's production was announced through the series' official [Twitter](/source/Twitter) account QNA.[34] It was also being co-produced by Mesmor Studios.[35] Four days later on November 18, it was announced that Meta Media Entertainment had been appointed as the worldwide distributor for the series.[36][33][37] An English dub was written by Evan Menzel and produced at Tribe Audio,[38] with episodes 1, 4, 16 and 19 being available on Meta Media's website and [Toon Goggles](/source/Toon_Goggles).[39][40][41][42] On December 18, 2021, the series began airing at 2 pm every Saturday and Sunday on [NET](/source/NET_(Indonesian_TV_network)) in Indonesia.[43][44] It was later announced on June 3, 2022 that Season 2 would be broadcast at 7 pm from June 29, 2022 to September 21, 2022.[7] The series was also broadcast on [9 Cartoon](/source/9_Cartoon) and Cartoon Club in Thailand as แก๊งป่วนก๊วนฮีโร่ ("The Hero Gang").[45]

Funding for Vincent dolls (in his bat form) and goodies including [keyrings](/source/Keyrings), [mugs](/source/Mugs), [flip books](/source/Flip_books) and [stickers](/source/Stickers) was carried out between December 4–31, 2020, a total of 28 days. The target amount was reached on the first day of funding.[46][47]

## Reception

Shortly after it aired, the series became popular on Twitter, Studio TNT responded to the reaction with active communication, such as posting a congratulatory message or holding a Q&A to reciprocate the fans' reaction. In addition, nicknames given by fans to some unnamed supporting characters were set as official names. Between December 1–15, 2022, a survey for the "Best 10 Children's Programs" (including *Hero Circle*) was created and gained encouraging popularity on EBS Kids and other children's channels.[48]

## Other media

On February 10, 2021, ***Hero Circle Run*** (Korean: 히어로 써클 런) was released on [iPhone](/source/IPhone) and [Android](/source/Android_(operating_system)). Developed by Studio TNT and Drakemount, it is a [horizantal-scrolling](/source/Side-scrolling) [platform game](/source/Platform_game) where the characters (trapped inside their phones by Papa Cat) run through various levels while using their superpowers.[49][50][51][43] The game was originally planned for release in October 2020.[5] There were also plans to publish a comic adaptation of the series,[5][32] though there haven't been any announcements about the comic adaptation as of April 2026.

## References

1. ["Hero Circle"](https://www.studiotnt.tv/herocircle). Studio TNT. [Archived](https://web.archive.org/web/20241226025527/https://www.studiotnt.tv/herocircle) December 26, 2024 at the Wayback Machine. Retrieved October 20, 2024.

1. ["Hero Circle"](https://welcon.kocca.kr/en/directory/content/hero-circle--4214). WelCon. Retrieved October 20, 2024.

1. ["ko:히어로 써클"](https://home.ebs.co.kr/herocircle/main). EBS Kids. Retrieved October 21, 2024.

1. ["ko:스튜디오티앤티"](http://www.demoday.co.kr/company/스튜디오티앤티). DEMODAY. Retrieved October 20, 2024.

1. ["ko:스튜디오티앤티 '히어로 써클', 투니버스 방영 확정"](https://n.news.naver.com/mnews/article/030/0002892508?sid=105). [Naver](/source/Naver). July 9, 2020. Retrieved October 20, 2024.

1. Editorial Staff, ETNews (July 6, 2021). "ko:[유교전-아라쇼] 스튜디오티앤티, 애니메이션 '히어로 써클 시즌 2' 소개" (in Korean). *ETNews*. South Korea: Electronic Times Internet.

1. ["ko:오잉 on Twitter: "님들, 주목!!! 그렇다네요.""](https://twitter.com/oingaccount/status/1532957720890179584). Twitter. [Archived](https://web.archive.org/web/20220604053032/https://twitter.com/oingaccount/status/1532957720890179584) June 4, 2022 at the Wayback Machine. Retrieved October 21, 2024.

1. ["Hero Circle"](https://www.lionforgeentertainment.com/tv/herocircle). Lion Forge Entertainment. Retrieved October 20, 2024.

1. ["ko:올여름 장난꾸러기 초능력자들이 돌아온다 _ 6월의 뉴 애니메이션 _ 히어로 써클 시즌2"](https://ilovecharacter.com/news/newsview.php?ncode=1065580760349523). ILoveCharacter. June 23, 2022. Retrieved October 20, 2024.

1. ["Teo Character Profile"](https://twitter.com/HeroCircle/status/1273497358777507840). Twitter. Retrieved October 20, 2024.

1. ["Sena Character Profile"](https://twitter.com/HeroCircle/status/1273541558906707969). Twitter. Retrieved October 20, 2024.

1. ["Vincent Character Profile"](https://twitter.com/HeroCircle/status/1273829960856170499). Twitter. Retrieved October 20, 2024.

1. ["Hero Circle on Twitter: "히어로 써클 등장인물 소개 '데비'.""](https://twitter.com/HeroCircle/status/1313391530128760833). Twitter. Retrieved October 21, 2024.

1. ["Hero Circle on Twitter: "히어로 써클 등장인물 소개 '유진'. 포포스쿨 게임부 부장 모든 게임에 다재다능한 '유진'입니다.""](https://twitter.com/HeroCircle/status/1323193788408373248). Twitter. Retrieved October 21, 2024.

1. ["Hero Circle on Twitter: "히어로 써클 등장인물 소개 '스티브' 포포스쿨 게임부 부원.""](https://twitter.com/HeroCircle/status/1348555249955516416). Twitter. Retrieved October 21, 2024.

1. ["ko:이번엔 어떤 병맛코드의 작품이 탄생하나요? - \[하이라이트 Ep.5\] - 쉿! 작품뒷담화"](https://www.youtube.com/watch?v=nxQoV66fk5c). YouTube. December 27, 2019. Retrieved October 20, 2024.

1. ["Hero Circle (Pilot)"](https://vimeo.com/329326222). Vimeo. April 9, 2019. Retrieved October 20, 2024.

1. ["Antony Norman Gusscott on LinkedIn: "Two years ago, we developed the pitch for Studio TNT's show *Hero Circle* and assisted with the pre-production. Thanks, Kidscreen, for sharing their success.""](https://www.linkedin.com/posts/antony-norman-gusscott_kidscreen-asiananimation-herocircle-activity-6697352003183607808-cyKW?trk=public_profile_like_view). LinkedIn. 2021. Retrieved February 28, 2025.

1. ["studio NODE: "We're making a ten-minute animated series called 'Hero Circle' by Studio TNT (Hero Circle - aired at EBS in April).""](https://id.pinterest.com/pin/610519293223118129/). Pinterest. Retrieved October 20, 2024.

1. ["Reel & Create"](http://studionode.modoo.at/?link=6795w4jz). studio NODE. Retrieved October 20, 2024.

1. ["studio NODE_ reel_2"](https://www.youtube.com/watch?v=L3RnNNCCWnA). YouTube. December 15, 2020. Retrieved October 20, 2024.

1. ["Animation"](https://en.soundscool.co.kr/animation). SOUNDSCOOL. Retrieved March 11, 2025.

1. ["ko:한콘진,'KNock 2017'로 세계시장 두드린다!"](https://www.kocca.kr/kocca/bbs/view/B0000138/1833508.do?menuNo=204768). [Korea Creative Content Agency](/source/Korea_Creative_Content_Agency). Retrieved October 20, 2024.

1. ["ko:제주창조경제혁신센터 소개"](https://www.jccei.kr/?page=207&act=view&seq=4344). JCCI. August 10, 2024. Retrieved October 20, 2024.

1. ["Studio TNT Co., Ltd"](https://welcon.kocca.kr/en/directory/company/company--19). WelCon. Retrieved October 20, 2024.

1. ["ko:공지사항: 2019년국산애니메이션제작지원 최종 선정 평가 결과 안내"](https://www.kocca.kr/kocca/bbs/view/B0000137/1838479.do?menuNo=204802). [Korea Creative Content Agency](/source/Korea_Creative_Content_Agency). Retrieved October 20, 2024.

1. ["30 New Projects To be Showcased at 2018 Asian Animation Summit"](https://www.awn.com/news/30-new-projects-be-showcased-2018-asian-animation-summit). Animation World Network. October 8, 2018. Retrieved October 24, 2024.

1. ["30 Projects to Debut at Asian Animation Summit in November"](https://www.animationmagazine.net/2018/10/30-projects-to-debut-at-asian-animation-summit-in-november/). Animation Magazine. October 10, 2018. Retrieved October 24, 2024.

1. ["Postcard from the 2018 Asian Animation Summit"](https://www.animationmagazine.net/2018/12/postcard-from-the-2018-asian-animation-summit/). Animation Magazine. December 3, 2018. Retrieved October 24, 2024.

1. 이웅 (November 30, 2020). ["ko:'린다의 신기한 여행' 등 7개국 애니메이션 프로젝트 첫선"](https://www.yna.co.kr/view/AKR20181130061200005). *연합뉴스*. [Yonhap News Agency](/source/Yonhap_News_Agency). Retrieved October 20, 2024.

1. ["Program"](https://aas.kidscreen.com/2018/program/). Asian Animation Summit 2018. Retrieved October 20, 2024.

1. ["Hero Circle at AAS 2018"](https://www.facebook.com/AsianAnimationSummit/posts/south-koreas-studio-tnt-came-to-aas-2018-ready-to-blow-things-up-with-its-pitch-/1635250976629448/). Facebook. August 6, 2020. Retrieved October 20, 2024.

1. ["Deals of the Week: Studio TNT, 9 Story, Millimages"](https://kidscreen.com/2020/11/20/deals-of-the-week-studio-tnt-9-story-millimages/). Kidscreen. November 20, 2020. Retrieved October 24, 2024.

1. ["Hero Circle on Twitter: "<히어로 써클 Q&A 코너> Q. 히어로써클 2기를 제작하실 생각이 있으신가요? A. 현재 2기도 제작중입니다. 정확한 방영 일정은 추후에 공개 예정입니다.""](https://twitter.com/HeroCircle/status/1327461254156304389). Twitter. Retrieved October 20, 2024.

1. ["Hero Circle"](http://bejuba.com/hero-circle). Bejuba! Entertainment. Retrieved June 24, 2025.

1. ["Global TV & Streaming News Bytes"](https://www.animationmagazine.net/2020/11/global-tv-streaming-news-bytes-4/). Animation Magazine. November 18, 2020. Retrieved October 24, 2024.

1. ["The Shows"](https://www.meta-media.co.uk/the-shows/). Meta Media Entertainment. [Archived](https://web.archive.org/web/20220905161130/https://www.meta-media.co.uk/the-shows/) September 5, 2022 at the Wayback Machine. Retrieved October 24, 2024.

1. ["HERO CIRCLE goes Meta Global"](https://sprinklesontop.co/news/f/hero-circle-goes-meta-global). Sprinkles on Top. 20 November 2020. Retrieved 28 February 2025.

1. ["Hero Circle"](https://www.meta-media.co.uk/hero-circle/). Meta Media Entertainment. [Archived](https://web.archive.org/web/20220720142222/https://www.meta-media.co.uk/hero-circle/) July 20, 2022 at the Wayback Machine. Retrieved October 24, 2024.

1. ["Hero Circle EP01 SNS Star (English Dub)"](https://www.youtube.com/watch?v=MYBOQGTIFNw). YouTube. May 20, 2023. Retrieved October 23, 2024.

1. ["Hero Circle EP04 Go Getta Robot (English Dub)"](https://www.youtube.com/watch?v=BS1yvjLXFQI). YouTube. May 20, 2023. Retrieved October 23, 2024.

1. ["Hero Circle"](https://www.toongoggles.com/shows/hero-circle). Toon Goggles. [Archived](https://web.archive.org/web/20221220023631/https://www.toongoggles.com/shows/hero-circle) December 20, 2022 at the Wayback Machine. Retrieved October 23, 2024.

1. ["My Hero Academia Versi Korea 'Hero Circle' Segera Tayang di NET tv"](https://kubuka.id/hero-circle-korea-net-tv/). Kutu Buku Kartun. December 1, 2021. Retrieved October 20, 2024.

1. ["Hero Circle, Animasi Korea Baru si NET TV. Berikut Jadwal Acara NET TV Sabtu, 18 Desember 2021"](https://kabarpriangan.pikiran-rakyat.com/hiburan/pr-1483260427/hero-circle-animasi-korea-baru-si-net-tv-berikut-jadwal-acara-net-tv-sabtu-18-desember-2021?page=all). Kabar Priangan. December 18, 2021. Retrieved July 10, 2025.

1. ["4 ช่องการ์ตูนส่งความสุขรับปิดเทอม ให้น้องๆ หนูๆ ได้สนุกตลอดเดือนตุลาคม"](https://www.naewna.com/entertain/686019). Naewna.com. October 12, 2022. Retrieved July 10, 2025.

1. ["Hero Circle on Twitter: "히어로 써클의 소심한 뱀파이어 <빈센트> 박쥐 인형 굿즈 펀딩 시작합니다. 자세한 일정과 내용은 링크를 통해 확인해주세요!""](https://twitter.com/HeroCircle/status/1334784511574306816). Twitter. Retrieved October 21, 2024.

1. ["ko:<히어로 써클> 빈센트 캐릭터 박쥐 인형"](https://tumblbug.com/herocircle_vincent). Tumblbug. [Archived](https://web.archive.org/web/20220811013451/https://tumblbug.com/herocircle_vincent) August 11, 2022 at the Wayback Machine. Retrieved October 21, 2024.

1. ["ko:어린이 프로그램 Best 10"](https://m.ilovecharacter.com/news/newsview.php?ncode=1065571783376950). ILoveCharacter. January 3, 2023. Retrieved October 20, 2024.

1. ["ko:히어로 써클 런 - 아이템 개인 모드"](https://www.youtube.com/watch?v=3kfRyX3IwPM). YouTube. February 15, 2021. Retrieved October 20, 2024.

1. ["ko:\[히어로 써클 런\] 구글 플레이스토어, 애플 앱스토어 출시!"](https://www.youtube.com/watch?v=C5atB-Pcl0E). YouTube. February 23, 2021. Retrieved October 20, 2024.

1. ["Hero Circle Run"](https://appadvice.com/app/hero-circle-run/1536884212). AppAdvice. Retrieved October 24, 2024.

## External links

- [Hero Circle on Official Studio TNT website](https://web.archive.org/web/20241226025527/https://www.studiotnt.tv/herocircle)
- [Hero Circle on Official EBS Kids website](https://home.ebs.co.kr/herocircle/main)
- [Hero Circle on Meta Media Entertainment website](https://web.archive.org/web/20220720142222/https://www.meta-media.co.uk/hero-circle/)
- [Official YouTube account](https://www.youtube.com/@HeroCircle)
- [Official Facebook account](https://www.facebook.com/히어로-써클-111260373949075)
- [Official Twitter page](https://twitter.com/herocircle)
- [Official Twocan page](https://twoucan.com/profile/HeroCircle)
- [*Hero Circle* channel](https://tv.naver.com/herocircle) at [Naver TV](/source/Naver_TV) (in Korean)

---
Adapted from the Wikipedia article [Hero Circle](https://en.wikipedia.org/wiki/Hero_Circle) by Wikipedia contributors ([contributor history](https://en.wikipedia.org/wiki/Hero_Circle?action=history)). Available under [Creative Commons Attribution-ShareAlike 4.0 International](https://creativecommons.org/licenses/by-sa/4.0/). Changes may have been made.