Ok so first off, I hope you liked the prolouge. And, here is the info of Izuku's quirk(s);

Earphone jack:(yes I know, but let me explain. I made some Mutant quirks so that they have the ability to be transfered by DNA. Next chapter will explain how izuku got it.)
Type: mutant
Abilities: gives user infinitly extendable ear phone jacks that can come out of the users body. Can be retracted or be permanantly visible. (Such as Jirou's case. Izuku can retract the earphone jack into his flesh, making it non visible.)

Mechanize:
Type: Transformation
Abilities: User can convert their own body cells, along with their fat cells into machines and can desolve the machines to get the cells back. 1/4 of the cells are burnt up from building the mech.

Drawback: over using will lead to critical energy decrease. User must always have a full stomach before building the mechs.

Welp, hope that satisfize you guys, oh and izuku's Hero costume will be a combination of;

                             +

Izuku will have Lucio's legs and gloves. The rest is the same as the anime/manga.