Zombie is periodically asked what her backstory is and why she speaks in the third person. Bits of the story are scattered around various parts of the site (as are a few of her limbs). The story is fairly long and a bit complicated. She's therefore putting this thread here so she can simply refer people to it rather than trying to tell it all again.
She has found 2 posts that between them tell pretty much the whole story.
The first one is her initial reply on a Zombie appreciation thread started by slatternlymother in September 2012. The second one is the OP of a thread Zombie started in September 2013 which brings the story pretty much up to date.