The walking Nazi Zombies. The ones that can be torn apart by a carbine (three guys with carbines can really mess up a zombie).
Either that or the nameless losers you fight at the beginning of the Fight Night 4 career mode. I once made a guy who's only effective attack was punching people square in the face. He was fast (simply so he could punch more), and had no health, but he absolutely destroyed those guys with face punching.
Either that or the nameless losers you fight at the beginning of the Fight Night 4 career mode. I once made a guy who's only effective attack was punching people square in the face. He was fast (simply so he could punch more), and had no health, but he absolutely destroyed those guys with face punching.