Not appearing in the comics, The Dixon brothers (Merle and Daryl) have been fan favorites from the start when it comes to the record setting television show.
Merle comes with his "knife hand", courtesy of Rick and T-Dog leaving him on the Atlanta rooftop in Season 1....can't say he didn't deserve it. Daryl comes with his trusty crossbow. I wonder if crossbow sales have gone up since Walking Dead came out on TV?
Anyway, the Dixon brothers can hand out plenty of grief to the zombies.