Natsuhiko Kyōgoku

Natsuhiko Kyōgoku (京極 夏彦,) is one of the main characters in the spin-off novel, Bungo Stray Dogs Gaiden.

Due to his actions in the novel, he can be considered as the main antagonist.

Appearance
Kyōgoku appears as a white-haired man, dressed in torn traditional kimono set. He dons a red mask on his head (possibly symbolizing his role as the 'demon'). He also wears a pair of circular framed glasses.

Ability
Kyōgoku's ability, A Inherent Drop (憑き物落とし,), or Exorcism allows Kyougoku to give someone a 'demon' which then alters their mind/spirit.