The Bad Guys (book series)
Dread Overlord Splaarghön – The primary antagonist of the latter books. He is an evil centipede-shaped demon who seeks to conquer the multiverse. His main methods involve granting powers to evil characters to act as his underlords in fulfilling his will. He convinces Mr. Snake to go against his friends in return for making him an underlord. When anyone says his name, a heavy metal guitar riff plays.