Kid Cosmic

• Jack Fisher as Kid[2], an excitable child who finds the Stones of Power to fulfill his dream of leading his own superhero team.
• Amanda C. Miller as Jo[2], a waitress at her mom's diner who dreams of seeing the world, and is granted the power of portal creation by the purple Stone of Power.
• Lily Rose Silver as Rosa[2], a four-year-old who is granted the power to enlarge herself to gigantic proportions by the blue Stone of Power.
• Tom Kenny as Chuck[2], an alien and a jerk who is among the first to try and steal the Stones of Power from Kid, and who ends up stranded in Kid's trailer as a result.
• Fred Tatasciore as Tuna Sandwich[2], a cat who resides at Flo's Diner and whom Kid uses to hide the red Stone of Power, which grants him the power of precognition.
• Keith Ferguson as:
  • Papa G[2], Kid's hippy grandfather who encourages Kid to find nonviolent solutions to his problems, and who is granted the power to clone himself by the yellow Stone of Power.
  • Carl, a trucker and regular at Flo's Diner.

• Kim Yarbrough as Flo[7], Jo's mother and proprietor of Flo's Diner.
• Christian Lanz as Carlos[7], Rosa's father and a regular at Flo's Diner.
• Grey Griffin as:
  • Carla, a biker and regular at Flo's Diner.
  • Ramona, Rosa's mother and a regular at Flo's Diner.[7]
• Rich Fulcher as Zarkon[7], a small alien adversary of Kid and his friends.
• Jason Hightower as Biker In Black[7], the leader of Earth Force Enforcement Force.
  • Earth Force Enforcement Force consists of Lanz as Crimson Vision, Griffin as Violet Vanish, Eric Bauza as Emerald Wing, Phil LaMarr as Golden Swarm, and Michaela Dietz as Blue Behemoth.[7] Their colors correspond to the powers granted by the Stones of Power.
• Cree Summer as Queen Xhan[7], a former bearer of the Stones of Power.

Kid Cosmic has received generally positive reviews, with critics praising the retro styled animation and characters, but criticisms stemming from the uneven story plotting and the main character's lack of development.