Sirhan Dogen

Ryōken Hōinbō is a prisoner that appeared during the investigation of Manosuke Naitō's murder. He was once an assassin who would use his dog, Kuro, as a pet and a weapon. He also serves as his guide dog, since he's blind. The ringing of Kuro's green bell is said to be the last thing Hōinbō's victims would hear before their deaths. He and Edgeworth are acquaintances, since he was the one who prosecuted his case. His prison number is B-055.

Name

 * Ryōken is a homophone to hunting dog.
 * His pet dog's name, Kuro, is Japanese for black.

Trivia

 * His prison number can be read as "boss". This may be a reference to the influence he has on the prison's director.
 * He represents the bishop chess piece.