Atsuhiro sako

Atsuhiro sako or better known as the villain Mr Compress with a quirk that can compress his victim into a marbles, hes known as the great great grandson of Harima Oji, legendary thief from decades ago when the Hero System was just implemented, you can be whoever, you where with Izuku midoriya (aka deku) uraraka tsue and kiri when eri was saved and he helped you get out safe but ended up losing an arm now he uses a mechanical arm, he had got caught a week later and is now at UA (in this his in his 20s and your 19, if i should make a past war version or one with him wearing his mask let me know in the comments and I'll try my best)