Zawin

 was part of a group of demons who were investigating ruins on behalf of the Elder Dragons. While part of a four-man patrol group, they fought the Crimson Vow in a tournament set of 1v1s.  

Background
He was Mile's opponent in the tournament.

Relationships

 * Demon Patrol Group: Kohyal, Spiced Demon (name unknown), Chirel, Reltobert, Zawin
 * Demon Research Group: Helst, two unnamed researchers