Yuri Lowenthal
Ben Tennyson (voice)
Ashley Johnson
Gwen Tennyson (voice)
Greg Cipes
Kevin Levin (voice)
Dee Bradley Baker
Humungosaur (voice)
John DiMaggio
Aggregor (voice)
Vyvan Pham
Julie Yamamoto / Computer Voice (voice)
Paul Eiding
Max Tennyson / Guard #1 / Guard #2 (voice)
Peter Renaday
Sir George (voice)
Scott Menville
Jimmy Jones (voice)
Juliet Landau
Natalie Tennyson / Melinda (voice)
James Remar
Vilgax (voice)
Alexander Polinsky
Argit (voice)
Kari Wahlgren
Charmcaster (voice)
Fred Tatasciore
Quince / Robot Guard (voice)
Rob Paulsen
Rhomboid Vreedle / Magister Patelliday (voice)
David McCallum
Professor Paradox (voice)
Dwight Schultz
Dr. Animo / Teacher #2 (voice)
Jeff Bennett
Pops Vreedle / Jailer (voice)
Wil Wheaton
Mike Morningstar / Darkstar (voice)
Patrick Cavanaugh
Winston / Esoterica / Additional Voices (voice)
Chris Pratt
Cooper (voice)
Greg Ellis
Dagonet / Reporter Chet Rigby (voice)
Peter MacNicol
Oliver / Forever Knight #1 (voice)
Kevin Michael Richardson
Magister Pyke (voice)
Jason Marsden
Young Max Tennyson (voice)
James Arnold Taylor
Announcer / Fake Vilgax / Fridge (voice)
Molly C. Quinn
Eunice / Computer (voice)
Tia Texada
Elena Validus (voice)
Robin Atkin Downes
Sir Cyrus / Additional Voices (voice)
Richard Doyle
Driscoll / Additional Voices (voice)
Christopher McDonald
Captain Nemesis (voice)
Tara Platt
Jennifer Nocturne (voice)
Zeno Robinson
Alan Albright / Heatblast (voice)
Sean Donnellan
Cameraman / Thug / Tech (voice)
Powers Boothe
Sunder (voice)
Peter Stormare
King Xarion / King Viktor (voice)
Beth Littleford
Sandra Tennyson (voice)
J.K. Simmons
Magister Gilhil / Plumber (voice)
Nicholas Guest
Simons / Worker / Guest (voice)
Matt Levin
Cash (voice)
