I love to roleplay my pets, but some of them are hard to find partners for. :/
It's good fun when it works out, though. xD
Not properly. I have a roleplay going offsite that grew out of my neopets (it no longer bears much resemblance to anything on the actual Neo site) and that takes up pretty much all of my creative writing urge.
I do have personalities and relationships and bits of backstory for several of them, just floating in my head and vaguely alluded to on their profiles, and they may well grow into fullfledged RP characters one day, but I'm not currently putting any effort into making that happen.