Marvus Silvervein

Backstory: Marvus grew up wandering in a forest by a growing village. They took shelter in one of the warehouses, and started taking care of the street animals of the village by night. As they noticed this, most people in the village grew to accept Marvus, as a caring but reclusive person. One day their human disguise failed as they fell asleep, and the people on the village were shocked, for they were the first tiefling many of them had ever seen. Though some people grew suspicious of him, most of them still believed he was good soul, but some of the new and rich families on the village did not share the appreciation and familiarity towards Mavus, to the point of a bitter, hidden aversion. The son of one such family accused Mavus of charming his girlfriend with dark magic, and in one of the nights where the girl was visiting them, the man started a fire in the house, filled with rage. Mavus managed to escape alive, rescuing the girl, but she was badly harmed by the fire. The villagers grew doubtful of the tiefling, and in the fury and sorrow of having lost their home and friend, Mavus killed the rich farmer's son, draggin his body and painting the streets with his blood. He stole all he could from the young man's house, before he fled into the night, with no direction.

- Trivia -
Marvus was my second Baldur's Gate 3 playthrough: Dark Urge, Warlock (Great Old One pact), Sorcerer of the Tempest
Romanced Astarion

Songs that I think fit him well are:
The Old Man and the Sea from Stratovarious (something his father would sing for him, on my friend Mexxy Dragon's homebrew world were tieflings are seafarers)