Shigeo is the main antagonist of the Liar Game: Roots of A short, Nine Darts. He makes no other appearances.
Shigeo is a middle-aged man with greying hair who wears a suit and tie through his appearances. He has a prominent grey mustache, and wears glasses. He tends to smile frequently, masking his underlying motives. He is quite prejudist, not believing that those with Green Disease deserve to live among normal people, and rather should be drained of all their work potential on their ways to the grave. He is also a bit like Liar Game antagonists such as Kazuo Fujisawa and Norihiko Yokoya in that he will do anything he needs to in order to make more money.
Content compiled by AnimeList.moe from publicly available sources.