Martin Jarvis
John Dread (voice) (35 eps)
Shannon Kenny
Rachel Leeds (voice) (35 eps)
Jacob Vargas
Dr. Roberto Martinez (voice) (22 eps)
Debi Mae West
Kat Ryan (voice) (22 eps)
Christian Campbell
Max Steel (voice) (22 eps)
Chi McBride
Jefferson Smith (voice) (13 eps)
Ed Asner
Chuck Marshak (voice) (13 eps)
Mae Whitman
Jo (voice) (3 eps)
Candi Milo
(voice) (2 eps)
Edward Albert
(voice) (1 eps)
Jesse Corti
(voice) (1 eps)
David DeLuise
(voice) (1 eps)
Matt Kaminsky
Josh McGrath / Max Steel (voice) (1 eps)
Rino Romano
(voice) (1 eps)
Dublin James Wahlberg
(voice) (1 eps)
Obba Babatundé
(voice) (1 eps)
David Newsom
Richard Shine (voice) (1 eps)