Vibrate

Vibrate is the Emitter Quirk of Ketsubutsu Academy's Yo Shindo, listed at long range because the tremors carry far past the point of contact. It arrives in Chapter 104 and Episode 54, and remains one of the more destructive abilities among the students outside U.A.

The power generates shockwaves that travel through virtually any medium. In practice Yo delivers them by touch, shaking whatever his hands rest against, most often the earth itself. He governs both the intensity and the pace of the tremors, down to the spacing between pulses, which gives him more precision than the scale of the effect suggests. Shaken hard enough, most objects simply come apart. Applied to the ground, the same technique produces contained earthquakes.

A side benefit comes from constant exposure: living with the aftershocks has toughened Yo against vibration in general, including hypersonic attacks.

The Quirk bites back, though. His own body is not immune to the aftershocks, and pushing the tremors too fast or too hard can lock him up completely, unable to move. Once a vibration passes a certain strength he cannot simply switch it off either; it has to run its course and fade on its own.

His named technique is Tremoring Earth, in which he commits full power through both hands into the ground and unleashes a quake that pulverizes everything around him.

Yo Shindo is the only holder. Against large formations of enemies he uses the Quirk to break the ground beneath them, scattering their organization and leaving them weakened before any direct fight begins. His acquired resistance to trembling, a product of his brain enduring the after-effects for years, hands him an edge against wave-based Quirks such as Orcinus.

His most consequential showing comes against the escaped Muscular, a fight he appears to be losing outright on raw strength. The appearance is misleading: the vibrations had been quietly degrading Muscular's muscle fibers the whole time, leaving the villain sufficiently compromised that Deku finished him without difficulty.