Great, then I'll just go ahead and write a character sheet.
Name: Devin Zaytsev
Quirk Name: Bone Armor
Quirk Details: Devin can grow and manipulate his bones.
Benefits: His bones, which are already considerably more resistant than usual, get harder and harder by drinking milk (or taking in calcium in any other way). Considering that bones also get stronger after breaking, he gets stronger as the fight goes on.
Drawbacks: The amount of bones he can grow and/or manipulate gets slowly (but continuously) smaller. So his bones do get harder, but his ability to manipulate them also slowly fades ( and, of course, the pain from breaking a bone is still there, even though he's got pretty used to it now).
Hero Name: Devin (Yeah, I have no imagination so I'll just go with the name)
Role: Hero-Student
History: Nothing interesting, really. Devin was born from Russian parents, he lived a normal life in a normal family. His quirk manifested rather early, and caused many problems during his childhood as his bones used to break often. He started training when he was 9, after seeing Deku in TV and being inspired by him.
Personality: Takes things personally even when he shouldn't. Friendly and sometimes quiet.
Likes: Milk, training, sleeping
Dislikes: People that are arrogant and/or too loud
Appearance: 6'4, 220 lbs, well-built body, black hair and eyes, wears the school uniform.
Costume (how it looks & what it does for you & your quirk, if anything): A grey shirt that leaves most of his back exposed so he can use his quirk more freely, and black cargo shorts.
Hope it's fine!