Encyclopedia SpongeBobia


Encyclopedia SpongeBobia
Encyclopedia SpongeBobia
This is the page about those related to Sheldon J. Plankton. For other uses, see Plankton (disambiguation).

This article lists the members of the Plankton family.

Family tree[]

Many generations
Karen the Crystal Ball
Many generations
Dead Eye Plankton
Cashmere Plankton
Four generations
Grand Dad Plankton
Granny Plankton
Moe Bros
Silas Plankton
Gordon Plankton
Ma Plankton
Clem, Rupert, Cletus, and other cousins of Sheldon
Sheldon J. Plankton
Karen Plankton
Chip Plankton II


Pre-modern era[]


Late for Breakfast 132


Main article: Planktonasaurus

Planktonasaurus is Plankton's prehistoric ancestor and also the oldest known ancestor of Plankton, who is a herbivorous sauropod dinosaur. He appears in the season 1 episode "Late for Breakfast" in The Patrick Star Show.




Main article: Planktonamor

Planktonamor is a medieval ancestor of Plankton, who is an evil wizard and appears in the episode "Dunces and Dragons." He was the owner of the medieval king jellyfish, who he would send out to destroy the town unless King Krabs gave him the power. After kidnapping Princess Pearl Krabs, SpongeBob was sent out to fight him to the death, winning by stepping on him.

Karen the Crystal Ball[]


Karen the Crystal Ball

Karen the Crystal Ball is a medieval ancestor of Karen, who is an all-seeing crystal ball married to Planktonamor. She shows Plankton where his enemies are on her screen.

Dead Eye Plankton[]

Dead Eye Plankton

Dead Eye Plankton

Main article: Dead Eye Plankton

Dead Eye Plankton is Plankton's western ancestor, who is an outlaw and appears in "Pest of the West." Everyone in Dead Eye Gulch is afraid of him. He uses a whip to threaten the citizens of the town. He brought down from power when SpongeBuck SquarePants stepped on him.

Cashmere Plankton[]



Cashmere is Karen's western ancestor. She only appears in the game SpongeBob's Idle Adventures.

Modern era[]

Sheldon J. Plankton[]

SVG Sheldon Plankton


Main article: Sheldon J. Plankton

Sheldon J. Plankton a green planktonic copepod who is Mr. Krabs' business rival. He runs an unsuccessful restaurant called the Chum Bucket alongside Karen, a waterproof supercomputer who is his sidekick and wife.

Karen Plankton[]

SVG Karen Plankton


Main article: Karen Plankton

Karen Plankton is Plankton's sidekick and wife who supplies him with evil plans to steal the Krabby Patty secret formula. She is a waterproof supercomputer who lives in the Chum Bucket laboratory.

Clem Plankton[]



Main article: Clem

Clem is the main cousin of Plankton. He is a hillbilly and his antennae are seemingly attached to his hat. It is mentioned that he cannot read.

Rupert Plankton[]



Main article: Rupert

Rupert is Plankton's country cousin who only appears in a comic in SpongeBob Comics No. 83. Unlike the others, he is orange.

Plankton's cousins[]

Plankton's Army 131

Plankton and his Cousins.

Main article: Plankton's cousins

Plankton's cousins include:

  • Clem Plankton
  • Zeke Plankton
  • Rufus Plankton
  • Jeke Plankton
  • Billy Bob Plankton
  • Billy Jim Plankton
  • Billy Billy Bo Willy Banana Fana Fo Filly Plankton
  • Toad Plankton
  • Enis Plankton
  • Doug Plankton
  • Leisha Plankton
  • Joe Plankton
  • Rainchild Plankton
  • Marvin
  • Cletus Plankton
  • Plankton 1
  • Plankton 1A
  • Plankton 1B
  • Plankton 1H
  • Plankton 1M
  • Plankton 2
  • Plankton 3
  • Plankton 3B
  • Plankton 4
  • Plankton 5
  • Plankton 7
  • Plankton 8
  • Plankton 9
  • Plankton 9A
  • Plankton 10
  • Plankton 10A
  • Plankton 11
  • Plankton 13
  • Plankton 14
  • Plankton 14A
  • Plankton 15
  • Plankton 16

Gordon Plankton[]

Plankton s daddy

Gordon Plankton

Main article: Gordon Plankton

Gordon Plankton is Plankton's father who appears in the book Hooray for Dads! Mr. Plankton is also mentioned in "Frozen Face-Off" when Plankton brings up that his dad thought he should have minored in business administration.

Ma Plankton[]

Main article: Ma Plankton
Ma Plankton is Plankton's mother. She is mentioned in the video games Nicktoons Unite! and Creature from the Krusty Krab. Plankton even kept claiming that she would be proud of him if he took over the world and appreciate him more.

Grand Dad Plankton[]

Grand Dad Plankton

Grand Dad Plankton

Main article: Grand Dad Plankton

Grand Dad Plankton is Plankton's grandfather who appears in "One Coarse Meal." Plankton sees him when he dreams of being eaten by Pearl. From the fact that Plankton saw him in a whale's stomach, he was eaten by a whale.

Granny Plankton[]

Plankton's Grandmother

Gramma Plankton

Main article: Granny Plankton

Granny Plankton is Plankton's grandmother mentioned in "Krabs vs. Plankton" and makes her first physical appearance in "Gramma's Secret Recipe." She later returns in "Grandmum's the Word."


Fredrick (Karen's father)
Main article: Fredrick

Fredrick is Karen's father and Plankton's father-in-law. He likes drinking English tea, but he is not very fond of his son-in-law. He has not appeared in an episode, but is a character who won in a contest in Nick Magazine. He appears in the December 2009 issue of Nick Mag.


Single Cell Anniversary 198
Main article: E.M.I.L.P.

E.M.I.L.P. is Karen's mother and Plankton's mother-in-law. Like Fredrick, E.M.I.L.P. does not like Plankton, saying that she wished Karen married an ATM, a person with money, instead of him. She appears in "Single Cell Anniversary" after Karen short-circuited. She is just like her husband Fredrick.

Chip Plankton II[]

Chip adult
Main article: Chip Plankton II

Chip Plankton II is the son of Sheldon J. Plankton and Karen Plankton. He made his appearance in "Karen's Baby." During his life, he grew up into different computer systems: a calculator (baby), handheld payment terminal (child), video game console (teenager), computer (young adult), and ATM (adult).