OK K.O.! Let's Be Heroes is a superhero comedy animated series created by Ian Jones-Quartey for Cartoon Network. It is based off the original pilot "Lakewood Plaza Turbo", originally released May 21, 2013 for Cartoon Network's 2013 Summer Shorts project. The series was originally believed to not picked up due to its lack of information over the past three years since the pilot's debut, aside from some slight hints and sketches of the cartoon. However, later, the voice actress of KO, Stephanie Nadolny, confirmed that the series is in production; with her having already recorded his voice for five episodes.

On February 4, 2016, a mobile game for Android and iOS was created and the web series had premiered on Cartoon Network's YouTube channel[2] and the CN App.[3]

In 2017, nearly 4 years after the original pilot was released, the show was greenlit[4] and first aired on August 1, 2017.[1]

On December 2017, the second season was confirmed to be released.[5]

On June 2019, the third season was renewed. On August 6, 2019, in an interview with Den of Geek!, Ian Jones-Quartey has stated that season 3 is the final season and will be airing the series finale in 2019.[6] It was further revealed that Cartoon Network did not renew the show after Season 3 and it was not Ian's choice to end the show, but gave the show crew an opportunity to make a planned ending.[7] It was revealed that the reason why OK K.O.! Let's Be Heroes ended was not because of ratings.[8]

On September 6, 2019, the series concluded with an hour event with the final three episodes: "Dendy's Video Channel", "Let's Fight to the End", and "Thank You for Watching the Show".

Starting on June 7, 2019, online releases of episodes has been opened up to be streamed on Hulu + Live TV than just limited to the Cartoon Network app.


While working as a storyboard artist on Steven Universe, Ian came up with an idea for a pitch called "Infinite Guy Generator", where a kid would summon different "guys" every episode to fight the villain's evil guys. When creating the pilot, Ian created a world based on that original idea.

Later, while working as a co-executive producer still on Steven Universe, he used that same idea for a guys generator, that appeared in one episode, which had good reception, coming back later in the second episode of that show.

While developing the OK K.O. mobile game and series, Ian eventually expanded the concept of "guys" to include "gals" and "pals" in this universe. Ian even considered renaming the show "G.U.Y.S. G.A.L.S. and P.A.L.S", but thought it was too long for a title. [9]

Mini Maulers Concept Drawing IJQ.jpg

While the show was in development, it was under a different name, "Mini Maulers". Dendy was originally an elf before changed into a kappa. It was later changed due to a Cartoon Network show existing at the time with the "MM" initials, likely referring to Mighty Magiswords.[10]


Main article: Episode Guide

The series' main protagonists. From left to right: K.O., Enid, and Radicles.

OK K.O.! Let's Be Heroes is set in the year 201X. A boy named K.O. aims to become the greatest hero as he works at Gar's Bodega, a hero supply shop located in Lakewood Plaza Turbo owned by Mr. Gar, a serious, dedicated manager. Alongside K.O. are his best friends and co-workers, Enid, a relaxed responsible ninja and Radicles, a narcissistic alien slacker. K.O. takes on adventures with his best friend and classmate Dendy and battles for the plaza against Lord Boxman's robots.

Voice Cast

Main article: OK K.O.! Let's Be Heroes/Voice Cast

International Releases

Country Title Premiere
Canada OK K.O.! Let's Be Heroes August 1, 2017
Latin America/Brazil OK K.O.! Seamos Héroes (LA)

(OK K.O.! Let's Be Heroes)
OK K.O.! Vamos ser Heróis (BR)
(OK K.O.! Let's Be Heroes)

September 18, 2017


United Kingdom OK K.O! Let's Be Heroes October 9, 2017


Germany OK K.O.! Neue Helden Braucht Die Welt

(OK K.O.! New Heroes in Need of the World)

November 6, 2017


Central and Eastern Europe (CEE) KO OK! Prostě koukej (Czech Republic)

(KO OK! Just Watch)
OK K.O.! Legyünk Hõsök! (Hungary)
(OK K.O.! Let's Be Heroes!)
OK, K.O.! Să Fim Eroi! (Romania)
(OK, K.O.! Let's Be Heroes!)

November 6, 2017
Northern Europe (Nordic) OK K.O. Vi Er Helte! (Denmark)

(OK K.O. We Are Heroes!)
OK K.O.! La Oss Redde Verden (Norway)
(OK K.O.! Let's Save the World)
OK K.O.! Nu Blir Vi Hjältar (Sweden)
(OK K.O.! Now We Are Heroes)

November 6, 2017


Portugal OK K.O.! Let's Be Heroes November 10, 2017
Africa OK K.O.! Let's Be Heroes November 18, 2017


Poland OK K.O.! Po prostu walcz

(OK K.O.! Just Fight On)

November 2017
Russia and Southeast Europe Окей, Кей О! Будем героями! (Russia)

(OK, K O! Let's Be Heroes!)
ОК, Кей О! Да бъдем герои (Bulgaria)
(OK, K O! Let's Be Heroes!)

November 2017[16]
The Netherlands OK K.O! Jij Wordt Een Held

(OK K.O.! You Are a Hero)

December 2017
Korea OK K.O! 내일은 히어로

(OK K.O.! Hero Tomorrow)

January 1, 2018


Australia OK K.O! Let's Be Heroes January 6, 2018


Phillippines OK K.O! Let's Be Heroes January 6, 2018


South East Asia OK K.O! Let's Be Heroes January 20, 2018


Spain OK K.O! Let's Be Heroes February 5, 2018


Turkey OK K.O! Kahraman Olalım''

(OK K.O.! Be a Hero)

February 5, 2018



OK K.O.! めざせヒーロー

(OK K.O.! Aim to be the Hero)

July 1, 2018



  • One of the most well-known qualities about this cartoon is its protagonist, K.O., who is voiced by Stephanie Nadolny; an actor better known for her role as Kid/Preteen Goku, and Kid/Preteen Gohan from the Dragon Ball (1986-1989), Dragon Ball Z (1989-1996) and Dragon Ball GT (1996-1997) TV series.
    • In the pilot, she even references the anime with her new character's traits. Such as:
      • Being really enthusiastic, kindhearted and wholeheartedly righteous.
      • Always wanting to pick a fight to test his powers.
      • Screams at an incremental rate as he charges up an attack.
  • OK K.O.! Let's Be Heroes is a storyboard driven show, meaning a team of storyboard artists (usually two) are given an outline by the story writers of which they write all of the dialogue and storyboard the episode.
    • According to Ian Jones-Quartey, it takes the storyboard artists to draw and write for 5 weeks and revisions department to add details and extra animation for 3 weeks after. [24]
    • In an interview with the Talking Simpons, Ian discussed that the show is drawn in pencil as opposed of ink on paper. The animators pencil each frame on paper using a light table and then color them digitally on a layer beneath the transparent linework.[25]
    • Storyboards are made with ToonBoom's Storyboard Pro software.
Steven Universe Hidden OK KO game.png
  • The show has a few references to another Cartoon Network show, Steven Universe.
  • Toby Jones stated that sometimes when the show crew is tweaking individual frames in the editing phase, they draw a tiny smiley face on them.[26]
  • Ian Jones-Quartey stated that all of the story arc plots have been placed into the episodes as they originally planned it as they wanted "way more stand-alone side-character development stories, fun one-off episodes, ridiculous flights of fancy, crossovers, and flashbacks".[27] It was revealed that there were more episodes planned out if the show continued long.
  • Often times in the show, characters would say "videos game" instead of "video games" and "sorey" instead of "sorry".
    • Ian stated it was a joke from Toby Jones' pilot AJ's Infinite Summer and because it reminded them of early Canadian anime dubs.[28]
  • It was revealed that the Lord Boxman and Professor Venomous couple was tough to be shown onscreen but the Enid and Red Action couple was even tougher.[29]


Click to view the gallery for
OK K.O.! Let's Be Heroes.

Reference Sources

  1. 1.0 1.1 "OK KO! Has an official non-vague on-air release date! AUGUST 1ST at 6:30PM!!! See you there!!!" - @ianjq on Twitter
  2. https://www.youtube.com/watch?v=yAW07aPQMFk
  3. http://www.cartoonnetwork.com/video/ok-ko/ko-episode.html
  4. https://www.regularcapital.com/2017/03/cartoon-network-studios-greenlights-ok-k-o-lets-be-heroes-animated-series/
  5. https://twitter.com/ianjq/status/938834682728218624
  6. https://www.denofgeek.com/us/tv/animation/282687/how-the-sonic-the-hedgehog-ok-ko-team-up-happened
  7. https://twitter.com/ianjq/status/1159503832100904960
  8. https://twitter.com/ianjq/status/1170017095318294528
  9. http://ianjq.tumblr.com/post/163646366819/steven-universes-guys-and-ok-ko-lets-be
  10. https://twitter.com/ianjq/status/1263565976827654145
  11. https://www.regularcapital.com/2017/08/cartoon-network-latin-america-and-cartoon-network-brazil-september-2017-highlights/
  12. https://www.regularcapital.com/2017/09/cartoon-network-uk-new-show-ok-k-o-lets-be-heroes-premieres-monday-9th-october/
  13. https://www.regularcapital.com/2017/10/cartoon-network-germany-and-boomerang-germany-november-2017-highlights/
  14. https://www.youtube.com/watch?v=SJ1eoML9ih8/
  15. http://prsdube16.blogspot.com/2017/10/its-moment-you-all-been-waiting-for.html
  16. https://www.youtube.com/watch?v=SEbmqp8NMOg/
  17. https://www.youtube.com/watch?v=_429uuwe31k/
  18. https://www.regularcapital.com/2017/10/cartoon-network-australia-and-boomerang-australia-january-2018-highlights/
  19. https://www.youtube.com/watch?v=OeouyT9Q5mk/
  20. https://www.facebook.com/cartoonnetworkasia/videos/1688708764483773/
  21. https://www.youtube.com/watch?v=26rTz_FWcpo/
  22. https://www.youtube.com/watch?v=Xs_FTF97BYI/
  23. https://twitter.com/ianjq/status/1012558635677855744
  24. https://twitter.com/ianjq/status/975871838600376321
  25. http://www.lasertimepodcast.com/2017/10/24/talking-simpsons-interviews-ok-ko-creator-ian-jones-quartey/
  26. https://twitter.com/tobytobyjones/status/1142874889772097536
  27. https://twitter.com/ianjq/status/1166868503468498944
  28. https://twitter.com/ianjq/status/1170063705276444672
  29. https://twitter.com/ianjq/status/1277315866770550784
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