Had some fun with the 'violence cheat' that unlocks the zako on Robocop VS The Terminator on Genesis/Mega Drive the other day. I'm sure they would appeal to a lot of people who frequent this thread; Didn't realise they could jump up and down levels at will, caught me by surprise. It's great when you discover these things without knowing before! .. All the human enemies in the game have bloody deaths, almost explosive deaths - which includes them of course. I don't know how the games were certificated at the time but I doubt they could have pushed it much more. I don't remember it having formal age restrictions actually, which is surprising. I assume the weapons in the game create the over the top gore or something. I noted they came in four colours (on easy mode, the game is seriously tough); blue, red, light green and black. They are also more dangerous than the standard male enemy equivalent as they can jump around, move slightly faster and also fire twice the amount of their peers. I got to the last level boss (I think) on easy; completing this game on normal would be extremely difficult without cheats, I imagine. On hard mode I would imagine it's near impossible.
Another complaint of the game would be it gets very samey after about half way, all the enemies seem to be replaced by annoying little mechanical bastards and the terminators.
Double edit - a page or so back we were discussing the rarity of zako being in stage 1 of games. Well, the zako (plural) is the first enemy that greets you in this one.