Ren Lo Po Bia

He is a Ranker and also a member of the Royal Enforcement Division, serving as Unit #67. During the events of Part I, Ren posed as the Wave Controller instructor on the Second Floor, Yuga (유가, Yuga), in order to retrieve the Green April and to dispose of Anak Zahard. He is also the one that killed Anak's mother. Being a member of the Lo Po Bia Family, he's currently using his position to promote the Lo Po Bia Family's Princess. By his own admission, he is the youngest member of Royal Enforcement Division.

(Source: Tower of God Wiki)