|Relatives|| Shougo Ryuujin (Son)|
|Japanese Voice|| 田中一成|
|Anime Debut||Episode 01|
Kengo Ryuujin (竜神健悟, "ryūjin kengo"), is a character in the Majin Bone anime series. He is the single parent of both Shougo and Tomoko Ryuujin and the husband of Chie Ryuujin as well as the person who taught them Karate. In addition, he is also the best friend of Mr. Shimatani.
He is a really calm person.