j (final fight)
An antagonist video game character from Capcom.
He first appeared in the Final Fight game from the 80s, and in many other fighting games since then.
J is part of the original Mad Gear gang that terrorized the streets of Metro City. He has blonde spiked hair, wears a yellow jacket with a radiation symbol on its back and blue baggy jeans. His design is basically a palette swap of Two P.
These characters are infamously difficult to beat because in the game, they tend to strike when the player has their back turned on one of them, and they appear among crowds of enemies most of the time.