Demon Cat

The Demon Cat is a character which appears in the Adventure Time episode Dungeon.

Description
A large felinoid creature, the Demon Cat was light blue in colour with large yellow eyes. It had a long purple tentacle which sprouted from its torso in place of a tale, its tongue was shaped like the face of a little kitten (presumably to lure in potential victims) and parts of its body - such as two of its legs - were not actually attached to its body, yet still maintained their correct positions when it moved.

The Demon Cat had an approximate knowledge of many things, although this knowledge was always slightly off; for example, he knew that Finn was human, but called him Frank. It was also deathly afraid of dogs.

History
When Finn entered the Crystal Eye Dungeon, one of the first creatures he encountered was the Demon Cat, which promptly attacked him. Luckily for Finn, the Cat smelt Jake on him and, being terrified of dogs, retreated.

Later, Finn unwittingly wandered into the Demon Cat's lair, causing the beast to start to hunt him. The boy was only saved by the intervention of the Guardian Angel, which carried him off.