Sheldon J. Plankton (character)

229,380pages on
this wiki
Add New Page
Discuss this page0 Share
Sheldon J. Plankton is the main antagonist of SpongeBob SquarePants. He is voiced by Doug Lawrence.


  • Species:
  • Skin Color: Green
  • Friends: Karen (wife), Neptune (formerly)
  • Enemies: SpongeBob, Patrick, Squidward, Mr. Krabs, Sandy. Larry, Pearl, Mrs. Puff, Neptune, Mindy, Gary

Counterparts (Boy Version)

Counterparts (Girl Version)

  • Daisy (Thomas the Tank Engine and Friends)
  • Wendy "Kootie Pie" O. Koopa (Super Mario Bros.)
  • Breezie (Sonic the Hedgehog)
  • Elmyra Duff (Tiny Toon Adventures)
  • Witch Hazel (Looney Tunes)
  • Karen (SpongeBob SquarePants)
  • Suzy Johnson (Phineas and Ferb)
  • Smoochum (Pokemon)
  • Heather (Total Drama)

Sheldon J. Plankton/Thomas


Ad blocker interference detected!

Wikia is a free-to-use site that makes money from advertising. We have a modified experience for viewers using ad blockers

Wikia is not accessible if you’ve made further modifications. Remove the custom ad blocker rule(s) and the page will load as expected.