OK K.O.! Let's Be Heroes

Courtenay Taylor

K.O. (voice)

Kate Flannery

Carol (voice)

Jim Cummings

Lord Boxman

Ashly Burch

Enid (voice), additional voices (voice)

Ian Jones-Quartey

Rad (voice), Darrell (voice)

David Herman

Mr. Gar (voice), Jethro (voice) / additional voices (voice), Action News Narrator (voice) / Brandon (voice)

Roger Craig Smith

Sonic the Hedgehog

Colleen O'Shaughnessey

Miles "Tails" Prower

Michael Sinterniklaas

Hero

LeVar Burton

Kwame

David Coburn

Captain Planet

Estelle

Garnet

Tara Strong

Ben Tennyson / Raven / Ilana

Peter Browngardt

Festro / Uncle Grandpa

Michael Dorn

Strike / I.M. Weasel

John DiMaggio

Four Arms / Jake the Dog / Shnitzel

Jonathan Davis

Succulentus

SungWon Cho

Teamster / Game (voice), Johnny / Jack Wacky / Rando (voice)

Melissa Villaseñor

Punching Judy / Mega Football Baby / Drupe / Gertie / Ginger, Potato (voice) / Drupe (voice)

Mary Elizabeth McGlynn

Dynamite Watkins (voice)

Kali Hawk

Red Action (voice)

James Urbaniak

Joff (voice)