Arawen

Arawen is the main antagonist of Unbound: Worlds Apart as the leader of the demon invasion on other worlds, and serves as the final boss. He is also Soli's biological father.

Before Unbound
At some point in time, he fell in love with Arana. However, after the discovery of the corruption plaguing the Sea of Reality, the use of World Gates became forbidden and so they could no longer see each other. Their longing for each other was unbearable and so they chose to use them anyway, for which they were both banished to Umberra. There, together with other castaways, they built a village ruled by Arawen. However, Umberra's corruption started affecting more and more villagers, until one day Arawen was affected as well. Arana decided to run away, which resulted in her death, but not before giving birth to Soli.

During Unbound
Arawen, now the leader of his demon army, started plotting revenge on the Mage Order for what they had done to them. This resulted in invading other worlds, killing all of their inhabitants, turning them into demons and bringing destruction and corruption to the land. At the beginning of Unbound: Worlds Apart, Arawen started invading the world of Vaiya, the place where Soli lived. Feeling obliged to act before everything is destroyed, Soli managed to save both Brom and Zarana and get into Umberra, starting a final battle against Arawen. The Demon King was defeated and ultimately killed, and his invasion of the Sea of Reality came to an end.