Hmm, I wonder how an Opossum enemy could be handled in Fallout? Obviously I wouldn't want to see them anthropomorphized with humanoid intelligence or have the ability to speak. Really their big purpose in life is to clean up carrion and to keep the population of other pests in check. Maybe they could be an excuse why dead bodies disappear, as well as show up alongside other carrion eaters? Though making them an enemy would be a bit silly, since they're relatively non aggressive in real life. Not saying you couldn't fight them, but it'd be more of a one sided affair. Though they could also be mutated into an opossum wolf or bear that's attracted to the smell of dead bodies, so killing loads of people or creatures out in the open, could run the risk of one spawning near you. Opossums also can "play dead" which in reality is involuntary, though when doing so they release a smell akin to what they eat... so maybe they could hide among dead bodies and ambush the player? I should also say this would have to be a Fallout set around the Appalachian area... though preferably not in 76, as I'd like to see them in something enjoyable.
