K.O. is the main protagonist of OK K.O.! Let's Be Heroes. External Links K.O. K.O. K.O. K.O. K.O. Retrieved from "https://characters.fandom.com/wiki/K.O.?oldid=164126" Categories: OK K.O.! Let's Be Heroes characters Male Kids Main Protagonists Mischievous characters Brown hair Cartoon Network Heroes Cartoon Network Characters Martial artist Barefoot Characters Crossover Characters Crossover Heroes Characters voiced by Courtenay Taylor Males who are voiced by Female Actors Titular characters 2010s Characters Characters who have a mom Community content is available under CC-BY-SA unless otherwise noted.