Plankton

Plankton is a minor antagonist that appears when you consume a Krabby Patty in GASA3

In GASA3
Plankton shows up as a minor antagonist when the player consumes a Krabby Patty and heads back to their room. It is unknown as to why Plankton chooses to kill the Protagonist.

Trivia

 * Plankton appears at the end of the "Krabby Patty" ending
 * Plankton can also be seen in the trash can inside the bathroom.