René Auberjonois
Dr. Strangesnork (108 eps)
Nancy Cartwright
Daffney Gilphin (108 eps)
Frank Welker
Tooter Shelby/ Occy/ Grandpa Wetworth/ Great Snork Nork/ Finneus (108 eps)
Rob Paulsen
Corky (108 eps)
Barry Gordon
Junior Wetworth/ Governor Wetworth (108 eps)
Clive Revill
Dr. Galeo Seaworthy (108 eps)
Michael Bell
Allstar Seaworthy/ Bigweed/Elder #4 (108 eps)
B.J. Ward
Casey Kelp/ Lil' Seaweed (108 eps)
Edie McClurg
Ms. Seabottom/ Mrs. Seaworthy (108 eps)
Robert Ridgely
Mr. Kelp (108 eps)
Mitzi McCall
Auntie Marina (108 eps)
Brian Cummings
Dimmy Finster (108 eps)
Bob Holt
Mr. Seaworthy (108 eps)
Gail Matthius
Smallstar Seaworthy (108 eps)
Joan Gardner
Mrs. Wetworth (108 eps)
Joan Gerber
Mrs. Kelp (108 eps)
Fredricka Weber
Willie Wetworth (108 eps)
Roger DeWitt
Jo-Jo (108 eps)
Roger Rose
Additional Voices (voice) (1 eps)