Blooded_Yautja
Does he know he's in the DC universe? I don't remember it being stated or not. Also is he gonna be a bounty hunter? I can see him taking the old and large bounties that no one is dumb enough to take just to get a good hunt. like I know there is a race that all the normal races fear because of how far reaching their empire is or something. The story The Caterpillar has Naruto/DC fic has Naruto and Kurama destroy their home world.
I think you should give the MC atleast some kind of power, DC world has countless people a fraction of his age that could kill him with a wave of their hand, skills and experience with a hard body don't matter when the universe your in has existences capable of casually distorting reality and conquering galaxies.