Gyokuen Ren

Gyokuen Ren (悟空練, Ren Gyokuen) was the wife of the former two Emperors of the Kou Empire and also member of the organization, Al Sarmen. She is now the current Emperor of the Kou Empire.

Personality
In Hakuryuu's memories, she seems like a very gentle and good mother. But later, she started to show her devious and deceitful side.

History
Gyokuen, with her deceased husband, had four children (from older to the younger); two deceased older sons, Hakuei Ren and Hakuryuu Ren. The first two sons died fighting against the Al Sarmen, whose members were probably sent from Gyokuen herself.