Text quoted from The New Discworld Companion.

Shoe, Reg. A zombie, former mortuary worker, currently a member of the Watch but perhaps most famously the founder of the Fresh Start Club, whos premises are at 668 Elm Street, Ankh-Morpork. He lodges with Mrs Cake. It doesn't matter what you say when talking to Reg Shoe, because Reg supplies your side of the conversation from somewhere inside his head.
     He has a pallid skin, big protruding eyes and wears a 'Glad To Be Grey' badge. His clothes look as if they've been washed in razor-blades and smell as though someone has not only died in them but is still in them. This is, of course, the case.
     Before his death, Reg used to live in Whalebone Lane. In those days, his clothing tended towards a rather more romantic black trousers, frilly shirt, sash and long curly hair, since he was a revolutionary, or rather, would have been a revolutionary if any real revolutionary cadre had been insane enough to let him know where they met. Apart from his involvement in the event of Night Watch, not much is known about what Reg did when he was alive, but his tireless activities on behalf of the Dead - his Campaign for Dead Rights, his enthusiasm for the Fresh Start Club, his impressive sense of civic responsibility, his loyalty and his endless protes songs played on a guitar (he used to crawl around on the floor looking for his fingers afterwards) suggests that life for Reg began around the time of his death.