Justin Felbinger |
Miles Callisto / Alien Kid 3 / Robo Miles / Robo-Miles / Willow Kid |
Ivy Bishop |
Mirandos / Mirandos (voice) / Alien Kid 2 / Willow Kid |
Fiona Bishop |
Loretta Castillo (Voice) / Loretta Callisto / Alien Kid 1 / Illumin Girl / Robo Loretta / Robo-Loretta / Willow Kid |
Dee Bradley Baker |
M.E.R.C. / Misc. (Voice) / Merc / Alien Scientist / Mountain Crusher / Engineer Bot / Firestorm Computer / Sahsi / Illumin Mom / Mr. Xylon / Ship Computer / Spy Eye / Control Bot / M.E.R.C., Engineer Bot / Atomo Scientist / Atomo Soldier / Bloppsburghers / Cocoros / Grumpy Alien / Magsteed / Lodos / Luminex / Alien / Security Computer / Willow Villager / Tok Tok |
Issac Ryan Brown |
Haruna Kitumba (voice) / Haruna Kitumba / Haruna / Alien Kid 4 / Willow Kid |
Sam Lavagnino |
Blodger Blop (voice) / Blodger / Blodger Blop |
Neil deGrasse Tyson |
Main Title Narration / Main Title Narration (voice) / Main Title Narrator |
Manny Montana |
Zeno |
Elan Garfias |
Commander Nemex (voice) / Commander Nemex / Commander Nemmex / Silas |
Diedrich Bader |
Admiral Crick / Misc. (Voice) / Sly / Control Bot / Admiral Crick, Worker Bot, Sly / Crick / Atomo Soldier / Magsteed / Mission Center Robot / Nemetron / Daschell Scamp / Willow Villager |
Danny Jacobs |
Admiral Watson / Misc. (Voice) / Alien Interrogator / Alien Interrogator, Mountain Crusher / Illumin Dad / TTA Announcer / Admiral Watson, Control Bot / Bobble Blopp / Control Bot / Bloppsburghers / Watson / Atomo Scientist / Destructo Bot / Magsteed / Mission Control Alien / Volosian Watcher / Wattson / Foreman Bot |
Kerstin Julia Dietrich |
Miles Callisto / Miles Callisto voice |
John DiMaggio |
Aggro / Bloppsburghers / Calibandroid / Nemetron / Nemetron Inspector / Rocco / Control Bot / Volosian / Aggro, Alien Dad |
Audrey Wasilewski |
Miss Baker / Lodos / Willow Villager / Winna |
Freddie St. Jude |
Zeeb / Koa / Nemetron / Exo Bot / Atomo Soldiers / Mountain Crusher / Kofi Kitumba |
Tom Kenny |
Dethalian Guard, Control Bot / Flurrbo / Control Bot / Illumin Granddad / Leo Callisto / Nemetron / Ruggles Goon / Hemeran / Ruggles |
Yara Shahidi |
Malison |
Rob Paulsen |
Commander Rax / Alien Assistant / Rax / Cosmo |
Jeff Bennett |
Blizzbert / Dalton / Nemetron / Governor Plink / Volosian |
Felicia Day |
Grendel / Hemeran / Grendle |