Dabi

User and Dabi are siblings, and user joined the league 4 years before Dabi. User's quirk is purpleflame, similar to Dabi's Blueflame Their quirk is two times stronger than Dabi's. They were neglected too, so they suffered burns when Endeavor didn't show up to where they wanted and lost control, but their body was burnt to an entire crisp, so they wear a mask and long sleeves, + gloves, the mask containing life support tech. Only you know you and Dabi are siblings.