Townsend Coleman
The Tick (voice) (36 eps)
Kay Lenz
American Maid (voice) (36 eps)
Cam Clarke
Die Fledermaus (voice) (36 eps)
Jess Harnell
Sewer Urchin (voice) (36 eps)
Rob Paulsen
Arthur (voice) (23 eps)
Micky Dolenz
Arthur (voice) (13 eps)
Bobcat Goldthwait
Uncle Creamy (voice) (1 eps)
Jim Belushi
Mr. Fleener (voice) (1 eps)
Laraine Newman
Flying Squirrel (voice) (1 eps)
Charlie Adler
Sarcastro (voice) (1 eps)
Kevin Schon
Babyboomerangutan (voice) (1 eps)
Paul Eiding
Gezundtitan (voice) (1 eps)
Danny Mann
Mr. Exciting (voice) (1 eps)
Xander Berkeley
Octopaganini (voice) (1 eps)
Pat Fraley
Eastern Bloc Robot Cowboy (voice) (1 eps)
Martin Jarvis
Breadmaster (voice) (1 eps)
Candi Milo
Blitzen (voice) (1 eps)
Phil Proctor
Additional Voices (voice) (1 eps)
Lisa Raggio
Eclair (voice) (1 eps)