Gary Cole
Harvey Birdman (voice)
Thomas Allen
Peanut (voice)
Stephen Colbert
Phil Ken Sebben / Myron Reducto (voice)
John Michael Higgins
Mentok the Mindtaker (voice)
Chris Edgerly
Peter Potamus (voice)
Paget Brewster
Birdgirl (voice)
Peter MacNicol
X the Eliminator (voice)
