Hexxus

Hexxus was a creature which appeared in Cartoon Network's animated series Ben 10, in the episode Story, Bored.

Description
An enormous, musclebound monstrosity, Hexxus had the upper body of a human whilst his legs had been replaced by the serpentine coils of an enormous snake. He possessed a degree of enhanced strength and invulnerability, and was inhumanly fast and agile.

History
When power-hungry magician Hex attacked author I.K. Crowling at a book-signing event and stole her magic tome The Grimoire of Archamada, he used its power to transform himself into the creature known as Hexxus before terrorising the attendees. Luckily, child superhero Ben Tennyson happened to be in the audience and was able to wrest the volume from Hexxus in his guise as XLR8. Deprived of the Grimoire's power, Hex reverted back to his human form and was promptly hauled off to jail.