Forced Quirk Activation allows the user to forcefully activate someone's Quirk against their will. Whether the target is conscious or not, the Quirk will work without fail, thus giving the user a method to use their allies' Quirks without having to worry about their state.
On the two occasions that All For One has used this Quirk, it has been in combination with the Rivet Stab.
All For One must know what the Quirk does before using it. So far, it has been used on Kurogiri to activate his Warp Gate and Magne to activate her Magnetism.
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