Death (Discworld)
Death has appeared in every Discworld novel, with the exception of "The Wee Free Men" and "Snuff", and had a possible cameo at the end of "Johnny and the Dead" (the character was not identified, but spoke in unquoted small caps). The Discworld books with Death as a leading character, starting with "Mort" in 1987, are:
Death (Marvel Comics)
During the "Chaos War" storyline, Daimon Hellstrom mentions to Hercules that Death has fled their reality upon Amatsu-Mikaboshi triumphing in the realms of the dead, causing the souls of the deceased to be unleashed upon the Earth, and rendering the victims of the siege, whose injuries might otherwise prove fatal, merely locked in a deathless limbo.