u're all talkin on subjunctive(if I recall my grammar), which is usually used to express desire(correct me if I'm wrong, which is probable)(annoying, isn't it?). Anyways, u can possess glukkons and sligs, in AO and AE(I don't know MO, but I guess u can, or it would loose most of it's fun)
As for my favourite char to possess is slig. beatin mudokons is so damn fine
... and I'd really like to posess a meech, if they ever resurface(or if I ever get my hands on an Xbox)
PS: I would like to recall that I am portuguese, so most of my "corrections" might be, and probably are as I said b4, very wrong