OK K.O.! Let's Be Heroes: The Movie

OK K.O.! Let's Be Heroes: The Movie is a 2020 American animated superhero comedy-drama film based on the Cartoon Network animated television series of the same name.

Cast

 * Stephanie Nadolny – K.O., Whistle, T.K.O.
 * Ashly Burch – Enid, Gladys, Foxy, Ms. Mummy, Ball Monster, Cherry, Icky, Rippy Roo
 * Ian Jones-Quartey – Radicles, Darrell, Crinkly Wrinkly, Cookie Man, Boris
 * David Herman – Mr. Gar, Brandon, Jethro, Mad Sam, Beardo, Rat, Steamborg Robot
 * Kate Flannery – Carol
 * Jim Cummings – Lord Boxman
 * Kari Wahlgren – Shannon, Chillcat, Tumbles, Mrs. Gnarlio, Vormulax, Kid
 * Robbie Daymond – Raymond, Co-Bru
 * Chris Niosi – Nick Army, Pird, Ernesto, Neil
 * Mary Elizabeth McGlynn – Dynamite Watkins
 * Cole Sanchez – Colewort
 * Melissa Villaseñor – Potato, Punching Judy, Mega Football Baby, Drupe, Gertie, Ginger, Shy Ninja
 * Kali Hawk – Red Action
 * Ben Jones – A Real Magic Skeleton, Cactus Person
 * James Urbaniak – Mr. Logic, Joff the Shaolin Monk
 * Melissa Fahn – Dendy, Mikayla, Krissa
 * Lara Jill Miller – Fink
 * Marina Sirtis – Cosma
 * Michael Leon Wooley – The Sun, Ted Viking, Bell Beefer, Galgarion
 * Wallace Shawn – Wally the Wizard
 * Richard McGonagle – Chameleon Sr.
 * Tony Revolori – Chameleon Jr.
 * Andrés du Bouchet – Joe Cuppa, Small Joe
 * Keith David – Crinky Wrinkly Narration
 * Parker Simmons – Plazamo, Lad Boxman, Skateboard Nerd, Pow Card Narrator, Rude Kid
 * Robbie Rist – Gnarlio, Frat Boi, Corn Shepherd
 * Kath Soucie – Peej, Gnarlio Jr.
 * Steven Ogg – Professor Venomous, Shadowy Figure, Laserblast
 * Jonathan Davis – Succulentus
 * Reshma Shetty – Elodie
 * Diedrich Bader – Cupid
 * Carol Kane – Ginger
 * Clancy Brown – Pavel, Powio Statue, Mr. Cardsley
 * Nichole Bloom – Pepelina, Carla
 * Dave Fennoy – Guards, Kappa, Ofrang, Bernard, Spanky
 * Michael Sinterniklaas - Hero
 * Melique Burger – Theodosia, Wilhamena
 * Joe Nipote - Crudde, Corn Shepherd
 * Sterling Jarvis - Rad's Singing Voice
 * David Coburn - Captain Planet
 * Tessa Auberjonois - Dr. Blight
 * Melodee Spevack- Fox Tail
 * Dana Snyder - Doctor Greyman

Trivia

 * This film will retain the traditional 2D animation style used for film adaptations of cartoons rather than CGI.