ZerO is welcome to be impressed as much as he wants later on. Right now though, they have a man they need to save. The plant seems to like fire almost as little as it likes being cut by that sword that ZerO is using.

He sees the man get lifted and he sets his feet. He throws another fire strike. He needs to build up a charge, get some momentum going before he can even try and see if Earthshatter would even work in a jungle on a living plant. "Ja. I have this. I'll hold it off. You get him safe and then we'll finish this thing together!" He then yells a war cry and launches himself at the plant, hoping that ZerO will take the man far enough away that he isn't threatened again. And also hoping that he'll come back. He fights better in a team.