The Pike is a minor villain in the 1963 film, The Sword in the Stone. It tries to eat Wart and Merlin in their fish forms. in the preview, it was called a "Lake Baracuta" before it was later reveled to Scroopfan that it is a Pike by a new SpongeBob fan, MetroScreamingMayor8841.
In the spongebob adventure, Fagin dark-controlled the creature to try and kill off our heroes. When it failed, Fagin turned it into a Heartless as punishment.