Here's Dante, the "demon" who joins the crew after they get caught by a certain pirate. I won't go too much in detail on the character, but he's got amnesia and can't remember anything from over three years ago, and can't remember anything about his gauntlet. The gauntlet is actually alive and can change forms, also talking to Dante once in a while.

Oh, and he's called "The Crimson" both for his deep red coat, and the fact that he's said to be the one who destroyed one of the larger floating islands, inhabited by thousands of people.