A big, hulking behemoth of a man, Jax Boyd is one of the members of The Authority, tasked with killing the Leonidus Family. His Quirk, Plasma, allows him to use the plasma in his blood to increase his strength and durability exponentially. Using his Quirk, he becomes an indestructible killing machine, capable of taking full force blows from All Might without problem (used as a reference). His voice is more catered towards a DBZ Broly tone, or any other monstrous fiends like him.