All For One (Quirk)

All For One (オール・フォー・ワン) is a Quirk used by Sensei.

Quirk Description
All For One allows the user to steal other people's Quirks and render these stolen powers as their own. All For One also allows the user to transfer the Quirks they stole to other people.

After the user of All For One steals a Quirk, the person whose Quirk was stolen becomes unresponsive and descends into a comatose-like state, as seen with Ragdoll whose Search Quirk was stolen by All For One, which caused her to enter a comatose-like state.

Not all recipients of a Quirk from All For One are able to handle the strain of gaining them. Subsequently, they become mindless dolls who are not able to speak or think for themselves.

When a Quirk gets transferred to someone who already has one, a mutation may occur and the two Quirks may blend together, creating an entirely new one, as shown with One For All.

It is implied that All For One can take similliar Quirks more than once and let the strength "stack up" for a more powerful effect, as shown when Sensei used muscle enhancement 3 times combined.