[Of course he knows who Tony is, even if he's never met the man. Or hasn't met him yet, some of the things that Sam and Steve told him, before he ran off, makes him think that they might have a rocky future ahead of them. But he can't be sure that this is even the Tony from his world yet, it's just a guy in armour at the moment.
A guy in armour who isn't winning...
He has these inner rules about getting too near to Avengers, mostly that he shouldn't do it because it usually ends badly and could lead to everything in the perilous state of control he has it in start to crumble. But he can't just hide there in the trees and maybe watch the man die, not when he's trying to be better than that.
So all of a sudden Tony will have backup in the shape of a guy well wrapped up in a black hoodie with gloves, to hide his metal arm and hopefully shield his face from being recognised. He just leaps right into the fray, grabbing one of the vines and slicing through it with a knife from one of his secret weapon pockets. He has a lot of those.]
ii
A guy in armour who isn't winning...
He has these inner rules about getting too near to Avengers, mostly that he shouldn't do it because it usually ends badly and could lead to everything in the perilous state of control he has it in start to crumble. But he can't just hide there in the trees and maybe watch the man die, not when he's trying to be better than that.
So all of a sudden Tony will have backup in the shape of a guy well wrapped up in a black hoodie with gloves, to hide his metal arm and hopefully shield his face from being recognised. He just leaps right into the fray, grabbing one of the vines and slicing through it with a knife from one of his secret weapon pockets. He has a lot of those.]