Ace

Ace is a young man with purple eyes and short, straight, ash blonde hair, whose bangs parted in the middle of his face and a part of his hair covered his right eye. Like most of the mafia, he often dressed formally. He dress in a gray suit vest and a purple tailcoat, as well as matching-colored slacks. He also sport a black necktie that was accessorized with an oval ruby partway in the middle, white gloves, and gold vertical bar earrings.

Though he was an executive, Ace had no loyalty towards the Port Mafia and even tried to recruit Fyodor in his attempt to rebel against the organization, particularly to assassinate Ōgai Mori. He was also quite cocky and confident in his own prowess and aptitude.

Ace took the lives of his men lightly, where he believed that turning their lifespans into jewels with his ability at will gave them purposeful value. Moreover, though formal in demeanor, he apparently saw mafia members as inferior to him. He also had a rather hostile relationship with fellow mafia executive Kōyō Ozaki and perceived Mori to be quite short-sighted and stupid for a leader. Amidst this imposing attitude, Kōyō noted that he was one of the first executives who fled during the Guild war, contrary to the other mafioso, commanders, and executives who personally went on the field to protect Yokohama's traffic systems.

Despite his arrogance, Ace was intelligent, observant, and cunningly skilled in gambling. Having his intelligence underestimated greatly insulted him, making him prone to bouts of violence as a result. With his sharpness, he noticed the faint inconsistencies of his base since Fyodor's arrival, ranging from the door lock to the frozen clock. Nevertheless, his overconfidence prevailed and ultimately led to his demise.

Ace started as an astute, clever gambler who dominated one of the Port Mafia's casinos. He bribed authorities a great deal of money, quickly rising and buying his way to the rank of executive within the mafia. However, he recognized other mafia members as nothing more than mere bodyguards, with whom he shared mutual distrust towards, including his fellow mafia executives. At some point, Ace secretly compiled a list of the abilities of Port Mafia agents – including Mori's top-secret ability – for his supposed rebellion, which he kept in his jewel vault.