His hair is light blue, his skin complexion is white, and he has an expressionless face. His clothing is a suit which consists of black jacket, a white shirt, a tie, black pants and black leather shoes.
Without his clothing, he is seen to have a muscular build as it was seen that he has 8 pack abs.
He is generally inexpressive, shows no compassion, is calculating and a strong enemy to beat. He has only expressed fear and despair to A, who has been the only one capable of inflicting physical and psychological damage to him. He is also quite calm and joking as seen in Chapter 54 where he asks Kaname to lick him one more time before being killed or beaten down.
He has a large collection of all types of sticks, after kiiling A, who had been giving sticks to people who weren’t related to the Site. The sticks are said to be the sticks that he retrieved from A. When that number matching Nijimi Anazawa's stick, the one 31.
- Thanks to one of his sticks, he has the ability to bend light to his will to make him completely invisible to the human eye.
- "Kichi" means base, while "Ro" means filtration. "Misu" means mistake, while "Mi" means not yet.
- It was revealed in Chapter 75 that the large collection of sticks in his basement that were once in A's possession. It was also revealed that Nana and him made a pact, even though he's a human, saying that it's been over a year now.
- He might identify as homosexual or a sadistic, since he imprisoned Kaname Asagiri and continuously sexually assaulted him. He also has Kaname call him, "master". But he might be fully homosexual as he told Kaname "Ever since the first time I saw you, I was always thinking how good you are. You are so beautiful."
- He is often seen wearing a bathrobe or naked when at home.
- He and Akuta Rintaro, a character from Mahou Shoujo of The End have a few things in common.
- His hobbies includes cooking, training, bouldering, playing piano.
- He likes antiques, flowers, and beautiful things.
- He dislikes insects and filthy people.