|Height||1.88m (6.2 feet)|
|Weight||74kg (163 lbs)|
|Base of Operations||Unknown|
|Relatives||Kenichi Kento (Brother)|
|Alias||Vulgar Sadist (俗サド Zoku Sado)|
Rai is a lean man with a muscular stature. The highlight of his appearance being the shinning blue hair and his equally blue eyes, features that differ from the typical Kento look. He doesn't wear anything specific and is always seen with new gear however, one thing that remains throughout all his outfits, are his shades.
Rai is oddly calm, some even describing him as emotionless. He is laid-back, speaks little to no at all and is. He's easy going and forgiving to say the least. However, all of that is an act, a facade behind his true demeanor. Rai, when ticked or exposed, or just feels like it, becomes a sadistic, loud and ruthless, hesitant he is not when killing others with cold blood. He considers everyone to be inferior to his own self and that he's superior to everyone and everything. Alienating himself from measly humans.
Despite his attitude, Rai showed a merciful side when he allowed his parents along with his younger brother to live after the massacre he created several years ago.