Benjamin D. Elegy is a repairman that has spent his life studying animatronics and robotics. He had been to the original Fredbear's Family Diner as a child and had been infatuated with the animatronics since then. All his life, he worked to get closer to the things he loved, the things he cherished. He chased his childhood high, and in his late twenties, got his wish.
Now he works for the Pizzeria, working hard to repair and maintain the animatronics, and the building by proxy. Very rarely is he there at night, but he knows of their ways at night. He's worked around this, using masks and even at one point, a springlock suit he removed the locks from... at least most of them. At one point, the hand of one of the suits crushed his hand into a pulp. Knowing he had no health coverage, due to the cheap company, he opted to try his hand at creating a new one from the spare parts around him. Thus, his left hand seems a little thinner than the other, a little different. Covered in a matted felt, his left hand is robotic, a spare animatronic part.
Over the years, he's upgraded it with various tools for the job, a veritable Swiss army knife, built into his hand, which he's worked to be easily replaceable.
Other than that, he's of average build with no notable features or clothing, and his tendency to hum soft songs while he works. He's usually seen with a wooden mask or two strapped to his belt or attached to his toolbag. He's also usually wearing a handmade wooden mask of one of the mascots, either actually wearing it, or having it strapped to the side of his head, like a tilted hat.