(Loved) Agni Flameborn

Lore
Agni, who was shunned by all for his body of flame, felt shocked when the girl befriended him. Soon, the girl became a large part of his life. Yet, there came a day where Agni was not there to save her,and the girl perished at evil's hand. Furious at what had happen to her, Agni's body burned more brightly than ever. Mad with revenge, he sought out those who had killed the girl,ending the life of each with searing flame.

Acquisition
From Heroes Colosseo ?

Name origin
?