Harvey Birdman, Attorney at Law

Gary Cole
Harvey Birdman (voice) / Judge Hiram Mightor (voice)

Stephen Colbert
Phil Ken Sebben / Myron Reducto (voice) / FBI (voice; uncredited) / Pirate (voic...

Thomas Allen
Peanut (voice)

John Michael Higgins
Mentok the Mindtaker (voice)

Chris Edgerly
Peter Potamus (voice)

Peter MacNicol
X the Eliminator (voice) /

Maurice LaMarche
/ Azul Falcone (voice) / Fred Flintstone / Bird / Can Opener (voice) / Azul Fal...

Paget Brewster
Birdgirl (voice) /

Phil LaMarr
/ Black Vulcan / Civilian #2 (voice) / FEAR #2 / Black Vulcan (voice)

Neil Ross
/ Dr. Benton C. Quest / Vulturo (voice)

Grey DeLisle
Receptionist (voice) / Debbie (voice) / Daphne Blake / Mrs. Debbie (voice) / Deb...

Michael McKean
Evelyn Spyro Throckmorton (voice)

Debi Mae West

Lewis Black
The Deadly Duplicator (voice)

Steve Landesberg
Bailiff (voice) / Grok (voice) / Doctor Quincy (voice)

Frank Welker
Jabberjaw (voice) / Fred Jones / Avenger / Robot (voice) / Jabberjaw / Biff (voi...

Wally Wingert
/ Hadji (voice)

Tom Kenny
Top Cat (voice) / Boo Boo (voice) / Elroy (voice)

Bill Farmer
Secret Squirrel (voice)

Toby Huss