Date of Birth: July 3, 1999
Age: 16-17
Zodiac: Cancer
Height: 170 cm (5'7")
Weight: 61 kg (135 lbs)
Blood Type: B
Persona: Captain Kidd, Seiten Taisei, William
Weapons: Bludgeons, Shotguns

Ryuji is known as a disruptive "problem student" at school whose bad behavior causes all sorts of trouble for the teachers. His rebellious, mischievous and disobedient nature are the perfect qualities to be a Phantom Thief.

(Source: Megami Tensei Wikia)