Kevin Smets

Jonny (voice)

Don Messick

Dr. Quest (voice)

Granville Van Dusen

Race Bannon (voice)

Rob Paulsen

Hadji (voice)

Anndi McAfee

Jessie (voice)

Jeffrey Tambor

Dr. Zin (voice)

Theresa Saldana

Dr. Eve Belage (voice)

Tim Matheson

4-DAC (voice)