Tie between Namor and Punisher. The fish man is a complete ass and acts more like a villain at times and also he would f*ck anyone over for his home and for Punisher...lol a lot of people don't even consider him a hero at all, just an insane killer. Then we would have BP who would also f*ck anyone over for his country but his not an ass nor an insane killer. Iron Man is an ass but unlike the previous 3 does his best to save the world.....ofc he screwed up multiple times. Lastly we would have Wolvy and Batsy and the only reason i put Batman as the least is because his morality has been tested so many times. Wolvy is a an animal...
In short Namor=Punisher>Panther>Iron Man>Wolverine>Batman