Hey guys, first post.
I'm GMing SR4 for some of my friends. We've had a few good sessions so far. (I like to think that way anyhow) First game I've ever GMed and all, played some other RPGs etc. I know a fair bit of Shadowrun lore from the books of old fortunately.
What I'm wondering about is if spirits can possess living people or part of their body. I'm thinking of having an NPC with an "evil arm" thing going on, maybe a cyberlimb that's been taken over by the last spell of a mage whose heart was ripped out by it. Perhaps he lost his arms in the accidents that killed his brother, with his brothers spirit or some other spirit now residing in the arm that was transplanted from his brothers corpse by the strange street doctor who saved his life.
I like scaring the players with unknown quantities like this. I think they enjoyed the dual-natured mutated lampreys... The group troll keeps one as a pet now.
However it seems unlikely that a spirit would reside in such a high-tech object as a cyberlimb however and I'm just wondering if people have any good ideas. A rogue AI personality controlling his cyberlimb? I'd prefer a spirit so I have an excuse for it to do downright freaky things like bleed corrosive blood, (As Corrosive Spit ability) emit an Energy Aura and that sort of thing.
Opinions? Advice?