OK K.O.! Let's Be Heroes/Trivia


 * Adored by the Network: The series was this, back when it premiered. At one point, it got the second-most airings of any show on the channel (behind Teen Titans Go!) and had promos aired during every show on the channel. It also was promoted on the channel many months prior to its premiere.
 * Author Existence Failure: Just averted with Russi Taylor (who voiced Phantasma from Scooby-Doo and the Ghoul School), who died a year after "Monster Party" aired.
 * Colbert Bump: Though they weren't obscure to begin with, being from the most well-known of the "Red Shirt Shaggy" movies (which inexplicably gained in popularity a few years prior), the Grimwood Girls saw an increase in fanart after the premiere of the episode "Monster Party".
 * Cross-Dressing Voices:
 * Both of K.O.'s voice actors are women.
 * Mega Football Baby is voiced by Melissa Villaseñor.
 * The Danza:
 * Raymond's name is a half-Spoonerism of his voice actor, Robbie Daymond.
 * Wally the White is voiced by Wallace Shawn.
 * Colewort is voiced by Cole Sanchez.
 * Descended Creator:
 * Ian Jones-Quartey voices Radicles, Darrell, Gregg, and Crinkly Wrinkly. He also voiced A Real Magic Skeleton and Mr. Logic in the mobile game.
 * Storyboard artist Parker Simmons plays a variety of minor roles, notably including Gerald Nametag, Fishdude, and Gil Ferris. This mainly happens in episodes he himself boarded, but there have been a few exceptions (such as "Legends of Mr. Gar" and "No More Pow Cards").
 * Harpo Does Something Funny: Lord Boxman is sometimes scripted with "Jim sputters" that are filled in by Jim Cummings' improvised vocalizations.
 * He Also Did: Ian was an executive producer and storyboarder on Steven Universe until he left to work on OK K.O..
 * The Other Darrin:
 * K.O. was voiced by Stephanie Nadolny in the pilot, most of the pre-series shorts, and the mobile game, but was replaced by Courtenay Taylor early on in the series. Due to the difference between the order of voice recording and airing order, K.O.'s voice changed erratically between the two during the shorts and the first thirteen episodes.
 * Mena Suvari voiced Enid in the original pilot and the mobile game. Come the minisodes and the full series, Enid is now voiced by Ashly Burch.
 * The standard robot enemies in the mobile game were voiced by the game's developers, while the final show uses different VAs.
 * Tessa Auberjonois voices Dr. Blight instead of Meg Ryan or the late Mary Kay Bergman.
 * Aaron Eves plays Mr. Cardsley in the video game for the series, Let's Play Heroes, rather than his voice actor in "No More Pow Cards", Clancy Brown.
 * Johnny Wu replaces James Urbaniak as Joff in Season 2.
 * Natalie Palamides voices Winnie instead of the late Marilyn Schreffler, and Kristin Li voices Tanis instead of the retired Patty Maloney.
 * Relationship Voice Actor:
 * Ian Jones-Quartey (Rad, Darrell) and Michael-Leon Wooley (Cool Sun) also lent their voices in Bravest Warriors with Ian as Wallow and Michael-Leon as Impossibear.
 * Erica Mendez, Carrie Keranen and Jamie Marchi, who respectively voiced Black Strategy, Yellow Technique, and Green Guts, respectively voiced Ryuko Matoi and Satsuki Kiryuin in the English dub of Kill la Kill, while the latter one voiced Panty in the English dub of Panty & Stocking with Garterbelt.
 * The Wiki Rule: OK K.O.! Let's Be Heroes Wiki
 * Word of Gay:
 * Ian Jones-Quartey confirmed in a Reddit AMA that Enid is bisexual and Red Action is gay.
 * During a Q&A Twitter Thread, Toby revealed Enid and Red Action's first date was "Back in Red Action", they were dating casually for a while and became a more committed couple somewhere around "Red Action to the Future".
 * On Twitter, he indicated that Joff and Nick are indeed a couple, and that Lord Boxman is pansexual.
 * During a Q&A Twitter Thread, Ian reveals Professor Venomous is bisexual and the entire Hue Troops are LGBT but he wasn't specific on their type.
 * Word of God: Stevie Borbolla, one of the storyboard artists, revealed that Enid and Puck Reverie (the wolf angel) are cousins.
 * Write What You Know: As per Word of God, KO’s interactions with Rad were based on Ian JQ’s relationship with his older brother.