Age: 23

Birthday: January 22

Height: 175 cm

Weight: 53 kg

Blood type: B

Likes: Being within his futon, hot springs, youkan , black-haired Nadeshiko (Gin Akutagawa)

Dislikes: Socialising, twisted things

Ability: Futon; allows him to control any electronics within sight as long as he isn’t touching them. His ability also enables him to process information dozens of times faster than an average human.

Katai Tayama is an information broker for the Armed Detective Agency. He used to be a member of the Agency, and has known Doppo Kunikida for ten years.