|Manga - Anime|
|Debut:||Chapter 700; Episode 629|
|Japanese VA:||Hideyuki Umezu|
|Japanese Name:||Hira Hira no Mi|
Diamante wears a light colored hat with light-colored locks of hair coming down from it. He has striped, rectangular streaks that run down from his eyes. According to anime, his eyes are blue. He wears a pink shirt with purple pants and a crimson cape made of steel. He is an extremely tall and thin man, at least a foot taller than Doflamingo who is 10 feet tall himself, and possesses a muscular upper body. His legs are especially long, protruding out right next to his face when he sits down.
Ten years ago during the takeover of Dressrosa, the streaks on his face were not present.
Every time someone says something flattering or good about Diamante, he denies it until the person flattering him stops. That is when he accepts the compliment, and believes that the person praising him had offered his or her unbiased opinion about his talents. 
He is also seemingly cruel, as he spoke to Bellamy extremely harshly after he was beaten in the Colosseum. During the usurpation of the Riku Family, he was seen smiling during the burning down of the castle, indicating his joy during the event. Diamante also is rather insensitive and he was beginning to willingly tell Rebecca about her mother's death on top of mocking her father for his sorrow over her loss.
Diamante does not seem to give in to popular opinion as he remained steadfast in declaring Rebecca the winner of block D when some other gladiators tried to attack her, showing at least fair sportsmanship.
Abilities and PowersEdit
As the director of the Corrida Colosseum, he is in charge of all the goings on in the building. He is also known as the "Hero of the Colosseum" on Dressrosa, for which Doflamingo holds him in high regard. In addition, he sits in Doflamingo's diamond chair, indicating a high status in the organization.
Doflamingo trusts Diamante enough to fight all of the block winners in the tournament alone, as the Battle Brigade that he commands has been sent away to complete various tasks. This implies that Doflamingo has enough confidence in Diamante's strength and abilities to at least compete against, if not defeat, Jesus Burgess, Bartolomeo, Rebecca, and Lucy by himself.
Diamante ate the Hira Hira no Mi, a Paramecia-class Devil Fruit that allows him to flatten anything and reform and fold it while still retaining its original characteristics.
Diamante wears a steel block for a cape, which he uses in tandem with his Devil Fruit powers to make it flutter, while maintaining its steel quality for defense, capable of snapping cutlasses and injuring enemies rushing into it. For offense, he wields a rapier, which he can also use his fruit's powers to make it flutter, reshaping it into other shapes for attack, and a club he keeps folded using his fruit's powers, and can then unfold and make it regain its shape to attack.
He participated in Doflamingo's takeover of Dressrosa during this time he did not possess his red streaks instead he had sadistic face as he watched the chaos unfold on Dressrosa. After Doflamingo successfully made Riku Dold III a villain in the citizens' eyes, Diamante, Trébol, and Pica stepped in and subdued the Dressrosa army, passing themselves off as heroes. Diamante also pursued Scarlett and Rebecca until Thunder Soldier intervened.As time went on Diamante had become loved by the people in the Corrida Colosseum becoming it's properitor known as the "Hero of the Colosseum" and earned a high rank in Doflamingo's army sitting in the Diamond chair.
Later he was seen in the Corrida Colosseum, where he was announced after the four other Donquixote Family members as part of the tournament to win the Mera Mera no Mi.
During the tournament, he was watching the battle royale from the staff room above the stands. He was talking with Bellamy about the latter's assassination assignment, saying that Doflamingo was too soft to give him another chance. He told Bellamy that if he got rid of Luffy before the end of the tournament, he would become an officer within the organization.
While Law and Doflamingo were fighting on the iron bridge, Diamante contacted Doflamingo via Den Den Mushi and informed him about Violet's betrayal. Doflamingo then ordered Diamante to send Lao G and others to guard the underground factory.
When Franky attempted to breach the Toy House, Diamante heard the commotion through Den Den Mushi.
Since Machvise, Senor Pink, Dellinger, and Lao G were busy protecting the toy house and the SMILE factory, Diamante decided to participate in the finals himself.
He entered the arena along with "Lucy", Burgess, Bartolomeo, and Rebecca. They were suddenly interrupted when some of the disqualified participants from Block D charged in, refusing to accept that Rebecca was the winner. Diamante repelled them with the power of his Hira Hira no Mi, telling them to accept their losses. Diamante then introduced a new type of Fighting Fish that can reach contestants in the ring and explained that the Mera Mera no Mi is in a chest on the back of one of those fishes. After Diamante declared that whoever can steal the chest and be the last person standing in this round's battle royale will be declared the winner, the match began.
When Lucy jumped on the fighting fish holding the Mera Mera no Mi, Diamante attempted to attack him in order to prevent him from acquiring the Devil Fruit. Much to his surprise, Lucy was able to block his attack and shatter his weapon. After Lucy shattered Burgess's armor, Diamante noted that Lucy's fighting style was different, due to the fact that this wasn't Luffy.
Later, Rebecca attacked Diamante, but her strike was ineffective because she was using a dull blade. Diamante retaliated by striking her with a club while saying that she will die if she is not willing to kill. He then mocked her about her mother's death.
- Diamante, Trébol, and Pica vs. the Dressrosa army
- Diamante vs. fighters from block D
- Corrida Colosseum Finale
- Diamante is the Italian, Spanish, and Portuguese word for "Diamond". This matches the card suit motif of Doflamingo's subordinates, as the diamond suit is called "diamante" in Spanish.
- The manner in which he utilizes his cape and rapier is reminiscent of a Spanish bullfighter, using their cape to distract the bull before striking it with a rapier.