Guest Stars Walton Goggins voices Cecil Stedman Zazie Beetz voices Amber Bennett Gillian Jacobs voices Samantha Eve Wilkins / Atom Eve Andrew Rannells voices William Clockwell Jason Mantzoukas voices Rex Sloan / Rex Splode Chris Diamantopoulos voices Donald Ferguson Zachary Quinto voices Robot Ross Marquand voices The Immortal Melise voices Kate Cha / Dupli-Kate Ross Marquand voices Rudolph "Rudy" Conners Grey DeLisle Griffin voices Shrinking Rae Nyima Funk voices Additional Voices Dan Navarro voices Additional Voices Robert Kesselman voices Additional Voices Ami Shukla voices Additional Voices Jay Pharoah voices Zandale Randolph / Bulletproof Sterling K. Brown voices Angstrom Levy Fred Tatasciore voices Adam Ben Schwartz voices Shapesmith Reginald VelJohnson voices Dean Winslow Cliff Curtis voices Paul Ben Schwartz voices Rus Livingston Scoot McNairy voices King Lizard Chris Diamantopoulos voices Doc Seismic Grey DeLisle Griffin voices Betsy Khary Payton voices Astronaut #1 Zehra Fazal voices Astronaut #2 Fred Tatasciore voices Supreme Lizard Gary Anthony Williams voices Graduation Announcer Gary Anthony Williams voices TV Announcer Gary Anthony Williams voices Space Director Melise voices Wife Tatiana Maslany voices Forewoman Tatiana Maslany voices Aquaria Kari Wahlgren voices Denise Kari Wahlgren voices Caitlin Kari Wahlgren voices Mrs. Farnsley Ben Schwartz voices Punk Thug Zehra Fazal voices Louise Cleveland Berto voices Husband Cleveland Berto voices Royal Guard #1 Cleveland Berto voices Darkwing Micah Aliling voices Louise's Daughter