Merle of Dionaea, a fairy from a clan that used to be hidden deep within a magical forest, but thanks to modern civilization is now not far from a small city.
Merle was attacked by a badger at one point that resulted in the loss of her left arm, her left eye, and her wings. Her clan had the means to save her life but not accommodate her, so she spent most of her days in a knothole in a tree, waiting for people to come talk to her or spend time with her or anything really.
One day, a mysterious vehicle appeared at the edge of the forest. Merle managed to get out of her tree and stow away, eager to do something, anything, new with her life. The vehicle was in fact the Last Dance, a spaceship owned by the star-hopping immortal rock band the Cosmic Generation (in town to play a small venue under the guise of HUGG, a KISS tribute band).
On the ship, the band had a toy keyboard that was Merle's size, and she pulled it into a hiding spot to try it out. Unfortunately, the hiding spot was an air vent, and after a week or two of thinking the Last Dance was haunted, the band found her.
The ship's engineer (also in charge of pyrotechnics) thought that designing tiny prosthetics would be a "fun way to kill an afternoon" and set her up with a cybernetic eye, arm, and wings. (The wings are also hard light and can appear and disappear at will.)
Now she plays keyboard for the Cosmic Generation under the stage name Requiem, adopting a persona that's inspired by the knights from her clan - larger than life, crude, and unflinchingly confident.