Death (Discworld)
Death is a fictional character in Terry Pratchett's "Discworld" series and a parody of several other personifications of death. Like most Grim Reapers, he is a black-robed skeleton usually carrying a scythe. His jurisdiction is specifically the Discworld itself; he is only a part, or minion, of Azrael, the universal Death. He has been generally used by Pratchett to explore the problems of human existence, and has become more sympathetic throughout the series.
Discworld gods
Gods on the Discworld exist as long as people believe in them and their power grows as their followers increase. This is a philosophy echoing the real-world politics of the power of religion and is most detailed in the novel "Small Gods". If people should cease believing in a particular god (say, if the religion becomes more important than faith) the god begins to fade and, eventually, will "die", becoming little more than a faded wispy echo.