Villagers/Civilians/Mooks in Combat
For villagers and human mooks in combat, you do not want to spend a lot of time preparing combat decks and character sheets for them. A simple way to handle them is to make a deck consisting of just the general actions. Then, based on how skilled they are at combat, give them a general Malus in place of a character sheet. E.g. a farmer might have a malus of 6, a mercenary might have a malus of 3, etc. You shouldn't agonize too hard about what mooks do; just choose some plausible actions like Charge!, Attack, HayMaker, Flee, etc. depending on the situation.