Here is an image of the survivors for the game (sorry about the dodgy photo):
Left to right they are:
Jack has an SMG and a knife. His SMG has a laser sight and carries extra reloads for the weapon. The ammo for his SMG is hollow point. Not street legal, but, hey, who is going to arrest him right?
Jack's special skill is "Mr. Personality" (gives bonus when searching locations)
(Played by the Extaordinarii)
"Lucky" is a SWAT officer, or was until 'zombie happened' to the world. As he was on the job when the outbreak happened he is still equipped to take the fight to the zombie hoard.