|Founder:||Sheldon J. Plankton|
|Employment:|| Brainwashed Bikini Bottomites|
Brainwashed King Neptune
|First appearance:||The SpongeBob SquarePants Movie|
|Latest appearance:||The SpongeBob SquarePants Movie (video game)|
|List of places|
Planktopolis is the temporary rename of Bikini Bottom when Plankton succeeded in bringing about Plan Z and enslaved all the Bikini Bottomites using mind control buckets. It was seen in the The SpongeBob SquarePants Movie and the video game. Planktopolis looked very gloomy and the sky was a gloomy dark red color. Planktopolis was filled with Plankton statues which Plankton's mind controlled slaves built for him.
In the background of Planktopolis, you can see the Krusty Krab and the Krusty Krab 2. You can also see three statues of Plankton. You can also see the poor Bikini Bottom citizens working for the evil Sheldon J. Plankton.