Whatever powers the U-Man had, he wasn't given a chance to display them. Xu Shu had not idled while Beast Boy attacked, and he dived straight back into the flow of the brawl without missing a beat. Speed is key, of course - the faster they can take this one down, the faster they could go to the aid of the other students.

The U-Man quickly recovers from the blow, his sword arm at an unnatural angle - but before he can regain enough focus to prepare some sort of other attack Xu Shu had already scored a wide slash onto his back. Using the man's armour as an anchor point, he runs through the motions for this particular technique with ease. It's one of his signature moves, and he's had a lot of practice.

Hopefully that would be enough. If the U-Man somehow had a healing factor, they could still continue bouncing him back and forth between them.