Umibozu(海坊主) is another "sweeper" working the rounds in Tokyo.
Despite his fearsome appearance, he has a phobia of cats, especially kittens and is extremely shy with women.
A skinhead who is a tall and large individual with muscular physique and is usually seen in an olive green military uniform and black shade.
He and Ryo have a history dating back to the civil war in Central America and goes by the professional name Falcon, while his real name is Hayato Ijuin(伊集院隼人) (borrowed from Hayato Ichimonji). His nickname Umibozu was given by Ryo. In the later part of the manga, he loses his sight after his optic nerve was injured and became the shopowner of "Cat's Eye Cafe", though much of his skills still remain.
As a mercenary, he is well adept with laying traps and guerilla tactics and seems to be skillful in many other aspects of things as well. As a sweeper, his level is nearly on par with Ryo.
Ryo Saeba(冴羽 獠)
They share a kind of frenemy relationship. As partners, they have joined hands in many cases for the jobs in Japan. In the later part of the manga, though Umibozu was being robbed of his sight by Ryo in an incident, he held no ill-feelings for Ryo and merely accepted it as a Cause & Effect of a conflict.
A beautiful sweeper who is Umibozu's partner and in the later part of the story, his wife. They manage "Cat's Eye Cafe" together. As an orphan from a civil war, she was raised by Umibozu and taught self-defense. When she wanted to join as a mercenary, Umibozu lied to her and left her behind, in order for her to pursue her life as an ordinary woman away from the battlefield. In order to realize her dream of marrying him, she went after him and reappeared before him in Japan. The turning point in their relationship, when Umibozu's sight deteriorated, concluded and fulfilled her wish. Their marriage ceremony is in Vol.35.
Weapons & Transport
His choice of weapons are heavy weapons like the bazooka and machine guns but he likes the Smith & Wesson Model 29 six-shot, double-action revolver, which he would choose should there be a duel with Ryo.