On screen
Cast
21 credited performers
E. G. Daily
Rudy Tabootie (voice)
Candi Milo
Snap (voice)
Hynden Walch
Penny Sanchez (voice)
Jess Harnell
Joe Tabootie (voice)
Miriam Flynn
Millie Tabootie (voice)
Robert Cait
Horace Wilter (voice)
Rodger Bumpass
Biclops (voice)
Malcolm McDowell
Barney the Encyclocentipedia (voice)
Rob Paulsen
Crainiac 3 / Chef (voice)
Patrick Warburton
Character not listed
Buck Owens
Character not listed
Quinton Flynn
Character not listed
Stephen Colbert
Character not listed
H. Jon Benjamin
Character not listed
Kurtwood Smith
Character not listed
Gilbert Gottfried
Character not listed
Maurice LaMarche
Character not listed
Corey Burton
Character not listed
Jonathan Pryce
The Quicksand Man (voice)
Rosslynn Taylor Jordan
Rapsheeba (voice)
Daran Norris
Speaker / Bear / Stick Figure (voice)