Suisei Nanamura

An elite detective specializing in homicide, therefore bearing the relatively rare DSC rank of 900.

Suisei is a very dominant, flamboyant person, as shown when he jumps from a helicopter. He is very confident in his abilities as a detective, showing much enthusiasm to delve into the Duel Noir case he was invited to take part in. He is stated to be very stingy about money.

Despite his flamboyant actions, Suisei is a very observant person, as he can sense the true natures of people just by looking at their clothing and states that knowing the value of what someone wears can help find a person's true nature.

This trait takes a much darker turn when he attempts to murder everyone with a revolver in order to take the one billion yen in the house for himself, as he uses his ability to read people to kill them more effectively. After he is defeated, Suisei ends up shooting himself, his last words being "Ah, I see. The fall from heaven has already begun".

(Source: Danganronpa Wiki)