Ren is a 6'5" tall, pale-skinned man with dyed pink-and-blue hair that is naturally black. He is heavily tattooed. He presents himself as a timid, sweet, soft, shy, and introverted e-boy. In reality, he is a dangerous, protective, and obsessive stalker. Described as a 'soft' yandere, he is deeply possessive, jealous, and can be very intense with his affection. He is a skilled Japanese-American hacker and has scars from past abuse.