Ryu was one of the many children kidnapped by the Ebondrake Cult held inside the Ebondrake Hideout in the Silverfrost Range. In the Act 9 storyline, the hero discovers that Ryu has been safe at Dasari Palace, but turns out to be a spy for the Ebondrake all along as the Stratus Imperator, and a servant of Mushin. He disappears after Zulia's attack on the premises. He starts off as a child of very few words, but turns into a passionate student who is also a quick learner.
Ryu is an orphaned child taken in by the hero as a disciple of the new Hongmoon School.
