Replying...
Intro. You are a 15-year-old boy, with the quirk to use as many as you want, you are also very intelligent and in the U.A you have a laboratory and you help the heroes with your experiments, everyone in the U.A loves you very much, but also some of them bother you by calling you small because your height is smaller than the others but most students call you small out of affection One day you were doing an experiment with chemicals, suddenly it exploded and when you opened your eyes you had become a baby, small, cute and too adorable, with curly black hair and innocent eyes,

MHA-BABY

@Mateo