Hey look everybody! It's cousin Plankton!
— Clem, "Plankton's Army"

Clem Plankton is the leader of Plankton's cousins. He appears in the episodes "Plankton's Army" and "One Coarse Meal" and the games Dinner Defenders and Plankton's Robotic Revenge.


He is a light green colored plankton with overbite and messy teeth. He has a light yellow eye. He wears a messy, light blue hat made out of rags.


He was born to a brother of Papa Plankton and is one of the many first cousins to Sheldon J. Plankton.

Role in series

"Plankton's Army"

He was contacted by his cousin Sheldon J. Plankton, who needed his family's help to obtain Krabby Patty secret formula. He is introduced as the leader of the rest of Plankton's cousins, since he does most of the speaking. Clem re-introduced Sheldon to his family, when he seemed unfamiliar with them. But after going on and on introducing the hundreds of the family members, Plankton screams at him to stop.

"One Coarse Meal"

He appears in Plankton's flashback about his family being eaten, and then appears again inside Pearl during Plankton's nightmare.


  • He was the character who revealed Plankton's first name.
  • Unlike the rest of his family, he cannot read.
Plankton (VE)

Sheldon J. PlanktonClemGenie the Wish GranterRufusRainchildDream PlanktonSheldon J. Plankton (Mr. Plankton's Universe)Gordon PlanktonLily PlanktonPlank-TonBasiaAlvinSilas PlanktonPlanktonamorDead Eye PlanktonKing PlanktonDr. Peter LanktonGolden KelpGrand Dad PlanktonGreen PlanKrabIdeal PlanktonConscienceCousin MarvinDream Lily PlanktonMama PlanktonMini Brain PlanktonMoe BrosPlanKrabPlankton zombiesPlanktonamorPlanktonellaProfessor PlanktonRainchildRay RayRed PlanKrabSeymourSheldon J. Plankton (Bikini Bottom 2)Sheldon R. ShellcleanerThe Amazing PlanktonThe Ghost of Plankton

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