Sin Kiske シン=キスク
Height: 181cm
Race: Part-Human, Part-Gear
Professional Status Occupation: Bounty Hunter
Weapon: Flag
Sin is the son of Ky Kiske and The Maiden of the Grove. He travels with Sol Badguy for most of the game. He does not seem to get along with his father very well. However, he appears to have a very deep love for his mother. He has an eye patch over his right eye for unexplained reasons. His hobbies include searching for novel adjectives and overcoming his dislikes one at a time. He dislikes people who aren't willing to overcome their dislikes, being treated like a child, and the United Kingdom of Illyria.
As a child, he was kept on a chain by Sol, and always carried his favorite stuffed animal Chimaki with him. He is the target of the antagonist Valentine, since his Gear cells allow him to be The Key to open and unlock The Cube.
He feels uncomfortable in orderly situations and is not too good at social dispositions. On the contrary, his personality that doesn't look back on what's done may seem insensitive, but his simple and innocent personality can be refreshing. He also has an optimistic and cocky side to him. He also considers his appetite as something important to him, as "he cannot say the other one."
Over the past couple of years, he has been traveling with Sol as a bounty hunter and has overcome many hardships. He trusts Sol and looks up to him as a father, a friend, and a teacher. He is currently enjoying his journey.