Captain Qwark, who's full name was Copernicus Leslie Qwark in the original series, and sometimes called Quark, and later Galactic President Qwark, who had also gone under many aliases, was a fraudulent "superhero" from the Solana Galaxy.
Trivia
Qwark befriends Marion in Ratchet & Clank's Adventure in Thomas and Friends: Sodor's Legend of the Lost Treasure.