Berserker

Berserker is a villain, and is one of the roughly seventy villains recruited by the League of Villains for the U.S.J. Incident, making him a minor antagonist of the U.S.J. Arc.

U.S.J. Arc
Berserker is one of the horde villains who invaded the U.S.J. led by Tomura Shigaraki. He attacked Eijiro Kirishima in the Ruins Zone with a sword, but it broke due to the student's Hardening Quirk. Thus, he was left defenseless as Eijiro attacked him, successfully knocking Berserker out. Berseker would then be arrested with the majority of the invading Villains following the authorities arrival.