Fiona Bishop

Loretta Castillo (Voice)

Dee Bradley Baker

M.E.R.C. / Misc. (Voice)

Diedrich Bader

Admiral Crick / Misc. (Voice)

Danny Jacobs

Admiral Watson / Misc. (Voice)

Sam Lavagnino

Blodger Blop (voice)

Justin Felbinger

Miles Callisto

Neil deGrasse Tyson

Main Title Narration (voice)

Issac Ryan Brown

Haruna Kitumba (voice)

Manny Montana

Zeno