Detroit Smash

Detroit Smash (デトロイトスマッュ, Detoroito Sumasshu) is a move performed by All Might using the One For All Quirk.

Description
All Might was first seen using it to save Katsuki from the villain who was attacking him. All Might powers up all his power into his fist and then smashes in into the ground to produce a shockwave.

On the other hand, Izuku does an uppercut when doing this move, as opposed to punching downwards at the ground like All Might.