So I’ve done some checking and someone correct me if I’m wrong but we never actually see eraserhead use his quirk on present mic. This lead me to thinking about Mic’s quirk and realizing that it is actually probably a mutant quirk not an emitter! Now to present my logic:
#1: he was born with it. As stated over and over again only mutation quirks are present at birth so we already know that at least some of his vocal cords and stuff are mutated.
#2: eraser is never used on it. It makes even more sense if you consider that they went to school together and probably found out early on that eraser doesn’t work on voice. This also explains why they are such close friends. Mic being able to keep fighting even when eraser is in use creates a powerful team up option.
#3: mic’s ears don’t bleed. In the final exam episode we see that voice is strong enough to cause jiro’s ears to bleed but Mic’s ears are just fine indicating that his whole body is altered to withstand that level of noise. It could just be a quirk adaptation but again he was born with his quirk at full power even with a adaptation he should have sustained some sort of damage as a baby just like bakugou strained his wrists when he uses his quirk at full strength with out his support gear and he has had years to build up both his quirk and his resistance to its blow back so it stands to reason that if he made a blast that big as a toddler when he first got his quirk then he probably would have broken something (not unlike ofa did with Midoriya because of lack of regulation) but mic deafened an entire hospital and suffered no damages whatsoever indicating that not only was his quirk extremely powerful at birth but also that his body was completely made for that level of power especially his neck muscles because babies have very weak neck muscles and a cry like that should have blasted his head back and would probably break a regular infant’s neck (my cousin recently had a baby and you really need to support the head because the baby can’t)
So in conclusion present mic has a mutant quirk and it probably pisses eraser off that he can’t do anything to shut him up. Let me know if you agree or disagree or have anything to add or argue about (or even just say hi)












