Plankton / PlankBot / Rube / Rubedor / Robo-Larry
Plankton / Fred / Larry / Various (voice)
Joey
Plankton, Larry the Lobster, Citizen, Fish #45 (voice)
Plankton / Teen Plankton / Rube (voice)
Mr. Lawrence
Plankton / Larry the Lobster / Ventriloquist (voice)
(voice)
Plankton (voice)
Self
Plankton, Buff Ghost, Ghost
Dave / Edward (voice)
Alien #2 (voice)
Sheldon J. Plankton
Plankton / Plankton Robot / News Anchor Fish / Mob Member (voice)
Plankton / Fish #7 / Attendant #2 (voice)
Edward / Ping Pong / Dave (voice)
Plankton
Plankton / Buff Ghost / Ghost (voice)
Filburt / Maitre D' / Martian 1 / Doug / Hopping Hessian / Doodleberg / Lizard (voice)
Plankton / Pocket Dogs
Filburt Turtle / Fruitcake Man (voice)
Plankton / Teensy Tom / Crowd (voice)
Fred / Customers (voice)
Rube / Larry / Tourists (voice)
Dr. Plankenstein / Fred / Crowd / Supporters (voice)
Dr. Plankenstein / Canned Laughter / Various (voice)
Dr. Plankenstein / Larry / Fred / Various (voice)
Rube / Mechanic 2 / Marvin / Worms (voice)
Fred / Cream Puff Guy (voice)
Rube / Hungry Feeling / Doctor / Pedestrians (voice)
Dr. Plankenstein / Announcer / Fred / Audience / Tattoos (voice)
Fish Announcer (voice)
Filburt Turtle (voice)
Plankton / Larry the Lobster (voice)
Edward / Dave / Ping Pong / Nurse Leslie (voice)
Edward (voice)
Cartoon Narrator
Additional Voices (voice)
Sheldon J. Plankton (voice)