Question: what is the strongest quirk in my hero academia?
Answer: 1 ALL FOR ONE. Though All Might is the symbol of peace and was the strongest hero in Japan (and possibly the world), there was still someone stronger than him, All For One.
2 ONE FOR ALL. ... 
3 ERASURE. ... 
4 BLOODCURDLE. ... 
5 BRAINWASHING. ... 
6 COPY. ... 
7 PERMEATION. ... 
8 WARP GATE. ...