This is my character in my second campaign (since the former second campaign retired).
Dumosos is born of wood-elf parents, however, when he hit puberty, his tiefling nature began to emerge. Initially, it was thought to be a blessing from some fey entity. It was only after an incident when a group of trappers were discovered with brutal injuries that did not match any beast or bandit that his village grew cautious. Eventually, the uneasiness grew significant enough that Dumosos was exiled.
He roamed the forest struggling to fight back the ever-encroaching fungal growth of civilisation. After a few years, he saw that alone he was not strong enough to protect the natural order. He left the dense forests in search of power and perhaps like-minded allies.