Radio Waves

Written as Denpa, Radio Waves is a long-range Emitter ability that All For One stole at some point from an unidentified original owner, and it eventually became part of Tomura Shigaraki's arsenal. It first appears in Chapter 275 and Episode 119. A separate Quirk carried by the EMP Bombers and Number 6 shares the English name but not the Japanese spelling.

The user releases an electromagnetic pulse that scrambles electrical devices and knocks communicators out of service. Because the ability can also push signals through an induced current, it doubles as a transmitter, capable of waking Nomu and issuing them orders directly. The emissions carry genuine physical force as well, enough to parry heavy attacks or shove opponents backward without effort. The anime renders activation as black sparks edged in purple crackling around the user's arms and palms.

Tomura paired it with Air Cannon for a sweeping blast that cut the Heroes off from their communications and, as a side effect, roused several unfinished Near High-End Nomu he had staged nearby. Commanding them was beyond him, since his inexperience left him unable to shape precise instructions through the current.

All For One had no such trouble. Operating out of Tomura's body, he used the Quirk to marshal the surviving Near High-End Nomu, ride them off the battlefield, and force his way into Tartarus, wrecking the prison's defenses from both inside and outside so he and the inmates could break loose. The same channel let his vestige and his original body talk across long distances. Against Star and Stripe, Radio Waves joined Air Cannon and Heavy Payload to produce an enormous energy beam, and it was later fired on its own at the fighter jets escorting her.