Gender: Male Location: United States (of America... it's r
Hartigan and Dwight are out pretty early (within the Sin City Universe they are clearly inferior to Marv)- but they take a chunck of Marv with them before they go.
This leaves us with McClain and Riggs. With the luck/probability altering power of John, and the fighting and pain tolerance of Riggs, they have a SLIGHT edge... until Riggs goes nuckin' futz on Marv's ass. Just prior to the throw-down, McClain whispered to Riggs that Marv was the guy who killed his wife... AND that he's Jewish. As we know, any Mel Gibson portrayed character would become unhinged at the mention of facing a Jew, and Riggs is already a psycho.
I think Marv kills these guys. He took gun shots, being hit by a car more then once, pistol whipped, hit with a sledge hammer to the head, hit in the back of the head with a big rock. He was in the movie around or possibly over peak human in strength.