SpongeBob SquarePants is the main antagonist in Five Nights at the Krusty Krab.
SpongeBob SquarePants is a yellow animatronic/robotic sponge. He has large eyes and two buck teeth on his upper jaw. He wears brown pants that have a red tie on them. SpongeBob's appearance in this game is very similar to how he appears in the cartoon, aside from certain differences to make him look like an animatronic.
Each night, SpongeBob will get more aggressive.
SpongeBob SquarePants returns once more in Five Nights at the Chum Bucket, as a machine specifically made to kill the player.
In Five Nights at the Chum Bucket, SpongeBob's overall appearance changed. His chest is more bulbous than in the first game, his arms are longer and muscled, and he is covered in black marks.
SpongeBob will move around The Chum Bucket, going to Camera 5, then move to Camera 3, Camera 1, then finally to your door at Camera 2. You can encounter SpongeBob at your left door.
- SpongeBob is one of the animatronics who can go the closest to the player's office, the other being Patrick Star.
- SpongeBob can go in almost all of the rooms. But, the only rooms he does not enter are the Supply Cabinet, and the Restroom.
- He is one of the three animatronics that will attack you if you pull up the monitor, the others being Patrick Star and Sandy Cheeks.
- Spongebob's appearence in FNaTCB resembles his superhero form from the Sponge Out of Water movie, but without the hat.