Diamante

Diamante is a member of the Donquixote Pirates. He apparently runs a colosseum on Dressrosa.

Appearence
He wears a light colored hat with light locks of hair coming down from it. He has streaks that run down from his eyes.

Personality
It seems that every time someone says something flattering or good about Diamante, he denies it until the person flattering him stops. That is when he finally accepts the compliment.

Abilities and Powers
He runs the colosseum on Dressrosa, for which Doflamingo holds him in high regard.

Dressrosa Arc
He was first seen on Dressrosa, discussing matters regarding the Mera Mera no Mi with Doflamingo, which his captain entrusted to him.

Trivia

 * Diamante is the Italian, Spanish and Portuguese word for "Diamond". This matches the card suit motif of Doflamingo's subordinates, as the diamonds suit is called "diamantes" in Spanish.