Afterlives
The nature of the afterlife on the Disc is very varied, and often depends on what the deceased believed in. Anyone who dies, however, will be met by Death, who takes the form of a living skeleton with a black cowl and a scythe, or, in some cases, anyone acting as his assistant, such as Mort or Mort's daughter Susan. The only exceptions to this are rats, who are met by the Death of Rats, and anyone who dies during the occasional periods when death is unable to do his job. In theory Death does not collect the souls of everyone who dies, but there is no example in the books of anyone entering the afterlife without seeing Death. Once met by Death, the deceased have been depicted as taking numerous different paths, although in most recent books most of them begin with the Dark Desert.
Read more about this topic: Religions Of The Discworld