Crom Cruach

Crom Cruach is a serpent-demon made out of drawings, and is the main villain from The Secret of Kells, an adventure experienced by Pooh and not Spongebob.

Role in the movie
In the movie, one of the artifacts needed to create the Book of Kells is the eye of Columba, which was stolen by an evil god named Crom Cruach. This worm had also killed off Aisling's family in a rampage of destruction years before. Eventually, Brendan, the hero of the movie, is able to defeat the worm and remove his remaining eye to complete the book of Kells.

Role in the series
Although Aisling managed to escape the creature and become Mewtwo's adoptive daughter in the Pooh series, Crom Cruach still remains in his cave, hungrier and angrier than ever. He will soon appear in the Spongebob series, where it is revealed that he is a Non Dark Spawn demon that fought during the Cartoonian War involving Chernabog and Yen Sid. If Aisling manages to guest star in a Spongebob episode and CC also happens to appear, the fey will have to buck up some courage to once again defeat the monster, this time without Brendan's help. The clips used for CC in the Spongebob series come from Gargoyles, more specifically the episode involving the evil Banshee and the fake Crom Cruach she uses to fight Goliath and his friends.