|Enemies||Spongebob, Mr. Krabs|
|Seen in games||3 times|
Sheldon J. Plankton is Mr. Krabs' nemesis and the main antagonist in the SpongeBob SquarePants television series as well as The SpongeBob SquarePants Movie. He is also the largest protagonist villain, though in some episodes that mainly focus on him where he was not portrayed as an antagonist/villain.
He operates a failing restaurant called the Chum Bucket, located directly across the street from the Krusty Krab. His primary goal is to steal the Krabby Patty secret formula and put Mr. Krabs out of business. Plankton succeeds at stealing the recipe in the movie, but his goal of world domination is thwarted by SpongeBob.
In the games
In Pigsaw Final Game, he was seen in a robotic space ship that had two mechanical arms, where he grabbed Pigsaw and put him in the Chum Bucket's jail. But he was defeated, when Spongebob puts the Krabby Patty on the shell, as Plankton ran to it and started eating it, when the shell closed.
In Spongebob Saw Game, he was first seen in the TV, where he talked a bit, when Pigsaw threw him off of his seat. The second time he was seen in a robotic space ship, next to SpongeBob's pet, Gary. SpongeBob pressed a button, with a long hand, which from Plankton's ship came a net, that was covering the large bowl and then zapped him with electricity that quickly flew up.
In Spongebob Ship Escape, Plankton was seen in the end in his Chum Bucket.
- Pigsaw Final Game (cameo, non-playable)
- SpongeBob Saw Game (cameo, non-playable)
- SpongeBob Ship Escape (cameo, non-playable)
- Plankton would be the first character to actually be inside Pigsaw's House, then the first to actually assist by keeping Gary hostage.
- Plankton's last line in SpongeBob Ship Escape could probably result in another SpongeBob Escape Game.