Trapezius is an enormous, muscular humanoid villain with an unusual extension from his shoulders that grows up and over his head, which gives it a hood-like appearance. His face is largely concealed within this hood, only showing round, white eyes and a large mouth.
He wears an armored half-vest with a chain over his right shoulder and cargo pants with additional plating.
Trapezius is cruel and cowardly, taking a family hostage and threatening to harm them if anyone gave chase to him. He is quick to mock his foes with his speed, and brag about the apparent ease of his revealed plans.
Trapezius Head Gear is seen terrorizing a town and holding hostages while Mt. Lady and Kamui Woods are having trouble dealing with him. As he is bragging about his strength, All Might shows up from behind and uses Missouri Smash to beat him quickly and save the hostages.
Overall Abilities: Trapezius Head Gear is assumed to be fairly powerful as both Mt. Lady and Kamui Woods struggle against him, even when he is holding hostages.
Unnamed Quirk: Trapezius Head Gear possesses an unknown Quirk that gives him a fair amount of strength and speed, but it is generally far below that of One For All's, as All Might defeats him with a single blow to the back of the head.