Plank-Ton is a superhero alter-ego of Plankton who appears in the movie The SpongeBob Movie: Sponge Out of Water as the deuteragonist. He also appears in the video game SpongeBob HeroPants and the book The SpongeBob Movie: Sponge Out of Water: The Junior Novelization.


Plank-Ton is a large and green humanoid who possesses near limitless superhuman strength and great invulnerability. His head remains the same size as Plankton.


  • The body design is a parody of The Hulk.