Hell yeah Zer0's coming back, he finally has something fun to fight and there's no way he's missing it.

Reinhardt is doing a fantastic job of distracting the plants, so Zer0 has a relatively easy time of finding a good hiding place for the poor unconscious guy. Once he's sure the guy will be safe, Zer0 makes his way back to Reinhardt, weaving through vines and chopping them down as he goes. It takes him a few minutes to navigate through the murder jungle. He doesn't really announce his return, but he does leap up onto Reinhardt's back, and from there launches himself into some incoming vines to slice through them. Sup boy?