If anyone needs an OC for their fic you can use mine (despite the name he is not a self insert):

Name: Violet Runner.

Bio: He is a Unicorn Stallion with a light brown mane and tail, tan colored fur and two interlocking brass gears for a Cutie Mark.

He's Steampunk, can fix/make anything that runs on steam, clockwork or early 1900 combustion engine,and specializes in experimental machinery (plains/airships and automobiles) and weaponry (Flintlocks, revolvers and muskets) and tests all of them him self.

He used to a live in Manehattan where he would work on airships, then moved to Ponyvile where he had a small shop where he would fix/make clocks and other clockwork items when the city became too crowded for his tastes. But moved to a warehouse in the mountains when ponies started to complain about the noise and small explosions coming from his garage. He met the mane six through Rarity who would go to his shop when ever one of her sewing machines would brake.

He looks like my Profile pic only with a horn (yes he wears pants from time to time).