|Birth date||April 2|
|Birth place|| Japan
|Fighting style||Shorinji Kempo with Ansatsuken techniques|
Retsu belongs to an exorcist clan of Buddhist monks who are ancient rival of Kotakage's ninja clan.
His clan haunt the Ju Roku Hashira powers belonged by an human bloodline with a demonic gene with large superhuman powers. Because of this he is Chizuru's exorcist master as she want to free his master Heihachi from this power.
- Gouken: he is a friend of Retsu.
- Umakashte: she is a friend of Retsu.
- Shun-Tao: he is a friend of Retsu.
- Dhalsim: he is a friend of Retsu.
- Chizuru: she is Retsu's exorcist student.
- Heihachi: Retsu is haunting hi powers.
- Kotakage: her ninja clan is an ancient rival of Retsu's monk one.