Todoroki was a smartly dressed young man. He had sharp dark hair cut short and strong dark eyebrows.
Todoroki showed his skill with firearms multiple times throughout the story, he was also well educated having graduated from Tokyo U and a skilled policeman.
Polite and mild mannered, Todoroki was constantly pushed to his limit while working under Natsuko Aki, whom he treated with upmost respect. Aki returned the kindness by constantly teasing and bullying her assistant.