Zombies, Terrorists or Nazis : Who will we have available for mass slaughter ?? Mutants (Splicers we now are supposed to be 'saving') - Non-sentient super vermin? ADAM pumped nasties...- Terrors of the Deep (when in your diving suit or things that slip in the airlocks)- Some Splicers who are too insane/dangerous to be redeemed?- Various machines (Splicers hae lots of time on their hands to innovated these)- Some villains are just too nasty to let live (some not even Splicers)- Creepy people who show up out of nowhere, talk about you like you were a lab animal and then flip coins alot. . . .