Knuckle Joe is a character in the Kirby series that appeared in Super Smash Bros. Brawl as an Assist Trophy. He is also a somewhat important character in the anime. he wears a Japanese fighting bandana and has spiky blonde hair. He has many fighting moves such as Vulcan jab (Kirby's basic attack in brawl), smash punch, rising break, roundhouse (anime only), and spin kick. In the anime, he hi-jacked a u.f.o which could possibly be used as a final smash.
Knuckle Joe is wanted by many fans to be playable, but is an Assist Trophy in Super Smash Bros 4.