Kurogiri

Black Mist (黒霧, Kurogiri) is a villain and one of the main antagonists of the Rescue Trial Arc. His goal is to kill All Might "The Symbol of Peace".

Appearance
As is name implies, Black mist entire body is made out of mist. He also wear a strange three metal plate object around his neck.

Personality
Black Mist is very polite, which is shown when he greets the students and introduces himself in a formal manner. However, like his fellow villains, he has shown to be sinister, threatening the students' by telling them that they would be tortured and killed when warping them to various areas of the U.S.J.

Rescue Trial Arc
Black Mist appears at the Ultimate Space and Jams, using his Quirk to warp himself and the villains to the area. He then appears before the escaping class of students, introducing themselves as the Villain Alliance and says that they were the ones who broke into Yuuei yesterday. Black Mist goes on to say that their mission is to kill All Might and wonders why he isn't here. Katsuki and Eijirou attack Black Mist, but their attacks simply go through him. Black Mist then uses his Quirk to warp the students to various areas of the U.S.J. After doing this, Black Mist fights No. 13. Black Mist uses his Quirk against No. 13's Quirk, warping No. 13's Black Hole against him, causing No. 13 to start turning himself to dust, prompting Black Mist to say that his battle experience is far lower than other Heroes due to him only specialising in disaster relief. Having incapacitated No. 13, Black Mist tries to stop Tenya from escaping, knowing that his escape would put them in jeopardy. Mezou attacks Black Mist, preventing him from attacking Tenya. As Tenya reaches the exit, Black Mist tries to attack him again, but Ochako, seeing a physical part of him, grabs him and uses her Quirk to make him float into the air, stopping him. Black Mist decides to inform Shigaraki on the situation, telling him that he has incapacitated No. 13, but failed to stop one of the students from escaping.

Shigaraki Tomura
Shigaraki considers Black Mist as their way of escape.