Michael

A dragon hunter from a different country than Raaze. They were attacked by Disas Trois in Tortier and fled with their comrades, abandoning the citizens. They met Ragna while fighting Balom Shuela in an abandoned village near Ronabeira. Although they requested Ragna to hunt Disas Trois, due to Crimson's plan, they ultimately hunted Disas Trois themselves, achieving their revenge.

After parting ways with Ragna and the others, they were attacked by Walt Kamuy and died along with their comrades. Just before being killed, they declared to Walt Kamuy that they would be hunted by Ragna.

The actions they took between parting with Ragna and being attacked by Walt Kamuy are explained on the back cover of volume 5 of the manga.