Diamante is one of the three top officers of the Donquixote Pirates. He occupies the Diamond seat of the Donquixote Family and is the leader of the crew's Diamante Army subdivision.
He was the proprietor of the Corrida Colosseum of Dressrosa, where he earned his title as the "Hero of the Colosseum" (コロシアムの英雄 Koroshiamu no Eiyū?). Due to his actions and role, he is one of the major antagonists in the Dressrosa Arc. Diamante wears a light colored hat with brown locks of hair coming down from it. He has striped, orange and red rectangular streaks that run down from his forehead, through his eyes, straight to his chin. In the digitally colored manga, he wears a pink shirt with purple pants and a crimson cape made of steel, while in the anime, Diamante dons a light colored shirt with brighter red pants that match his cape. He is an extremely tall and thin man, much taller than Doflamingo who is 10 feet tall himself, and possesses a muscular upper body. He possesses a slight hunchback. His legs are especially long, protruding out right next to his face when he sits down. In the anime, he was given blue eyes.
As a child, he wore an old and worn pirate hat which covered up his forehead, a large robe, a tattered tank top, and striped pants. Ten years ago during the takeover of Dressrosa, the streaks on his face were not present.
Didit is a tall, fair-skinned woman with slanted eyes, a pointed nose, and an oval-shaped head. She has shoulder-length blonde hair that is curled in the back and parted in the front. She wears long, lavender-colored cardigan over a dark-purple dress with a frilled neckerchief. She wears a red sash around her waist, a purple hair band with a flower on it, and red lipstick. Like many other nobles, Didit has very materialistic values and strongly believes in the social hierarchy of class systems. In many instances in Sabo's life, Didit tried to guide and teach him by ways of nobility. She told him that he should marry a royal princess so the family could live easier and be happier. When Sabo was assaulted by an armed royal boy, Didit was much more concerned by the wellbeing of the royal child then her own. These attitudes of Didit and Outlook III caused Sabo to leave home to live in Gray Terminal.