Giant Demonic Spongebob is a character that appears only in the episode "Ghoul Fools" of SpongeBob SquarePants.
When Squidward was sucked into the Void by Lord Poltergeist, this creature is who Squidward encountered. He looked like Spongebob, but instead of a high-pitched voice, he has a low slo-motion demonic voice. In the first part, he appeared in the Void and scared Squidward.
In the last part, he appeared at the Kursed Krab in the void by flipping the restaurant. Then his head morphs into the Flying Dutchman's laughing. His quote:" Hi, neighbor. Bah ha ha ha ha ha ha ha ha ha ha ha!"
- He is voiced by both Tom Kenny and Brian Doyle-Murray.
- His voice and laughter sounds much deeper than SpongeBob's voice.