Carlos Alazraqui
Rocko (voice) (100 eps)
Tom Kenny
Heffer Wolfe (voice) (100 eps)
Mr. Lawrence
Filburt Turtle (voice) (100 eps)
Charlie Adler
Ed Bighead (voice) / Bev Bighead (voice) (100 eps)
Joe Murray
Ralph Bighead (2 eps)
Dom Irrera
Slippy (voice) (2 eps)
Quinn Kitmitto
Judge (voice) (2 eps)
Kevin Meaney
Widow Hutchison (voice) (2 eps)
Richard Simmons
Aerobics Instructor (1 eps)
Jill Talley
Nosey (voice) (1 eps)
Alisa Wilson
Sheila (voice) (1 eps)