I don't know if this is the best Subreddit for this but hopefully you guys and gals can help me.

The Comic book in question revolves around an older man in America, who all his life has been indestructible and he works for the government hunting down other enhanced people and bringing them in or killing them. Hes dating a really young woman as well. I loved this comic its art and story when I was younger and for the life of me I cannot remember its name. It was all grey scale as far as i remember as well.