Регулярный состав сезона 5

1. 

   Quinton Flynn

   Jonny Quest (voice)

2. 

   Jennifer Hale

   Jessie Bannon (voice)

3. 

   Rob Paulsen

   Hadji Singh (voice)

4. 

   John de Lancie

   Dr. Benton Quest (voice)

5. 

   Robert Foxworth

   Race Bannon (voice)

Приглашённые звёзды 2

1. 

   Clancy Brown

   Frederico (voice) / Francois (voice)

2. 

   Michael Gough

   Jacobi (voice) / Eric (voice)

Съёмочный состав 1