(Demonflame) Angel Eater Barrett

Lore
Barrett reveals his true form while tattered feathers float to the ground. The demonic flames within his palms flare up, fueled by the shriveled angels that lay at his feet. Knowing the time is ripe, he spreads his bony wings and looks toward the sky.

Acquisition
?

Name origin
?

Additional Info

 * End Boss of Forest Trailing (Chapter 72 of the Quest).
 * End Boss of Ascending Demon (Chapter 73 of the Quest).