Bozar

From Homestar Runner Wiki

"How are you going to play tonight's show after I turn your instruments into Italian noodles?"

Bozar was a magical prankster in the quickly-cancelled Limozeen Saturday Morning space cartoon. He has the ability to turn reality upside-down. He also has a big moustache and green horns coming out of his enormous big bald head. In the one episode that ever aired, Bozar turned the band's instruments into Italian noodles.

While the concept of an magical alien trickster calls to mind characters such as the Great Gazoo from The Flintstones or Orko from He-Man and the Masters of the Universe, Bozar's insulting manner of speech and apparently fondness for causing trouble by transmutating objects makes it clear that he's a parody of the fifth-dimensional imp and Superman villain, Mr. Mxyzptlk.