Harvey Birdman, Attorney at Law

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

Stephen Colbert
Phil Ken Sebben / Myron Reducto (voice) / Fed #2 (voice) / Pirate (voice) / FBI ...

Thomas Allen
Peanut (voice)

John Michael Higgins
Mentok the Mindtaker (voice)

Chris Edgerly
Peter Potamus (voice)

Peter MacNicol
X the Eliminator (voice) / / X

X the Eliminator (voice) / / X

Maurice LaMarche
/ Azul Falcone / Stan Freezoid (voice) / Yogi Bear (voice) / Apache Chief / Ann...

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
Debbie / DMV Operator / X's Wife (voice) / Receptionist (voice) / Daphne Blake /...

Michael McKean
Evelyn Spyro Throckmorton (voice)

Lewis Black
The Deadly Duplicator (voice)

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

Frank Welker
Jabberjaw / Biff (voice) / Jabberjaw (voice) / Avenger / Fed #1 / Juror (voice) ...

Debi Mae West

Wally Wingert
/ Hadji (voice)

Toby Huss
/ Devlin (voice)

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

Bill Farmer
Secret Squirrel (voice)