OK K.O.! Let's Be Heroes Animated comedy set in the futuristic year of 201X, where the world is populated by video game and manga-esque characters. Details Casts Videos Galleries Posters Season Lists Title OK K.O.! Let's Be Heroes Genres Animation Comedy First Air Date 2017-08-01 Last Air Date 2019-09-06 Episode Runtime 00 Hours 11 Minutes Total Season(s) 3 Total Episode(s) on All Seasons 108 Runtime 11 Production Companies Cartoon Network Studios David Herman... Brandon... Ian Jones-Quartey... Rad... Courtenay Taylor... KO... Kate Flannery... Carol... Ashly Burch... Enid... OK K.O.! Let's Be Heroes | Intro Theme Song | Cartoon Network (Opening Credits) Original Size (1280x720) Original Size (1280x720) Original Size (960x1440) Original Size (960x1440) Original Size (960x1440) Season 1 52 Episode(s) 2017-08-01 Season 2 37 Episode(s) 2018-05-04 Season 3 19 Episode(s) 2019-07-07