Thadeus ("Final Flight of Osiris") / Cop ("Kid's Story") / Agent #2 ("World Record")
Kevin Michael Richardson
Operator ("Final Flight of Osiris")
Tom Kenny
Pilot ("Final Flight of Osiris")
Rick Gomez
Crew Woman ("Final Flight of Osiris") / Nurse ("World Record") / Misha ("Beyond")
Tara Strong
Old Womand ("Final Flight of Osiris")
Bette Ford
The Instructor ("The Second Renaissance Part I & II") / Narrator ("World Record")
Julia Fletcher
01 Versatran Spokesman ("The Second Renaissance Part I & II")
Dane A. Davis
Kid ("The Second Renaissance Part I & II")
Debi Derryberry
Mother ("The Second Renaissance Part I & II")
Jill Talley
Additional Voices ("The Second Renaissance Part I & II") / Monaka ("Matriculated")
Dwight Schultz
Additional Voices ("The Second Renaissance Part I & II") / Ash ("A Detective Story") / Raul ("Matriculated")
James Arnold Taylor
Teacher ("Kid's Story")
John DeMita
