Here's MY list:

The Punisher (Duh!)

Deadpool (Maybe...)

Iron Man (Possibly...)

Green Arrow (Might get predictable after awhile but he DOES use various different arrows so...)

Deathstroke: (What? He can still use swords!)

That's all I can think of right now, but even if these characters wouldn't have to STAY in first person mode, they could still have the OPTION of going back and fourth whenever the gamer decides to do so. What do all of you think?