Jonny Quest

J.D. Roth

Jessie Bannon (voice) / Kate (voice)

Jennifer Hale

Jonny Quest (voice)

Quinton Flynn

Dr. Benton Quest (voice)

George Segal

Jonny Quest (voice)

John David Weinroth

Dr. Benton Quest (voice)

John de Lancie

Jessie Bannon (voice)

Jesse Douglas

Roger `Race' Bannon

Robert Patrick

Hadji Singh (voice)

Michael Benyaer

Roger `Race' Bannon

Robert Foxworth

Hadji Singh (voice)

Rob Paulsen

Bandit

Frank Welker

Sentry

Nick Jameson

Iris the Computer (voice)

B. J. Ward

Walker

Chick Vennera

Ezekiel Rage (voice) / Karst (voice) / Dr. Forbes (voice)

Michael Bell

Badur (voice) / Professor Scheele (voice) / Hakim (voice)

Ed Gilbert

Donaldson

Jan Rabson

Neela (voice) / Julia (voice)

Nancy Linari

Dr. Zin (voice)

Clyde Kusatsu

Dr. Vedder (voice) / Black Jack Lee Impostor (voice) / Havel (voice)

Jim Meskimen

Abby (voice) / President Stasny (voice) / President (voice)

Darleen Carr

Officer (voice) / Stage Coach Guard (voice) / Kyle (voice)

Earl Boen

Julie (voice) / Natasha Rastova (voice) / Belle (voice)

Helene Udy