Warp Gate

Kurogiri was the holder of Warp Gate, an Emitter Quirk of long reach that first appears in Chapter 13 and Episode 9. Rather than being inherited, it was manufactured, stitched together from several powers layered over Cloud as its foundation. That makes it the earliest artificial Quirk introduced in the story.

The mist reads mostly as purple shot through with black, and it accounts for the bulk of what Kurogiri physically is. When the personality of Oboro Shirakumo pushed back to the surface, the portals changed hue, threading pale blue through the darkness as Cloud reasserted itself underneath.

The user calls up a body of dark fog and steers it. Contact is all it takes: anything the mass touches is relocated to a point somewhere nearby. Kurogiri could also wrap the vapor around himself, concealing whatever lay beneath and ferrying objects in and out of his own form. The process carries a grisly failure mode, since shutting a gate on someone caught partway through severs them.

Its targeting system is the source of its biggest limitation. Destinations are set by coordinates, not by people, so the user has to know precisely where an exit should open. Line of sight covers most of it, with coordinates filling in for places out of view, but a comrade whose location is unknown simply cannot be reached. Kurogiri's throat, wrapped and unable to produce fog, was the physical hole in his defense, and enemies who struck there could pin him. Strain was a factor too. After breaking from his Nomu conditioning to shuttle the Heroes to Mt. Fuji so they could regroup, his body began failing, and the single portal he managed afterward, an attempt to shield Tomura Shigaraki, was detonated by Katsuki Bakugo's Explosion, killing him.

Kurogiri served as the League of Villains' entire transport network. The Quirk let them walk into the Unforeseen Simulation Joint unopposed, cross to Hosu City or The Beast's Forest in a heartbeat, and vanish cleanly during the Kamino Incident. Once the Police Force took him into custody, the organization felt the loss immediately, left with the far more limited Warping supplied through Johnny, a Nomu built by Kyudai Garaki.

Neito Monoma later turned the power against its owners' side during the Final War by taking it with Copy. He used the gates to drop Heroes onto the battlefield without warning All For One, then to fracture the Villain forces, scattering them to separate fights across Japan.