duma is a fallen angel in the dc vertigo series the sandman, created by the british author neil gaiman. his name means "silence", and he is based on an angel from jewish mythology. ==outside the sandman mythos== in jewish folklore, duma is the angel of silence and death's stillness; the hebrew word "dumah" means silence. according to the same stories, he is the guardian of egypt and the prince of vindication, and sometimes is called the angel who killed the firstborn egyptians in moses' time. at least one source names him a "prince of hell"; meaning that at some unknown point in time, he apparently displeased god and fell from grace. the zohar, a book of jewish mysticism, describes his position in hell as such that he had "tens of thousands of angels of destruction" under him, and that he was "chief of demons in gehinnon (hell; a more familiar spelling is "gehenna") with 12,000 myriads of attendants, all charged with the punishment of the souls of sinners." in babylonian mythology, dumah is the name given to the guardian of the 14th gate, a gate through which the goddess ishtar passed on her journey to the underworld. it is unclear whether the babylonian and hebrew mythology are related. ==within sandman==  it is unknown how much of duma's background from jewish mythology that gaiman actually incorporated into the character (in fact duma's role as the vindicator was taken by another dc character, the spectre, who also entered in contact with duma). many theories and interpretations have been put forward, but nothing is concrete. in season of mists, lucifer has closed down hell in frustration, handing off the key to morpheus. eventually, after much squabbling between various gods, duma and remiel receive a message saying that they are to watch over hell. remiel immediately rejects it. but duma, being the angel of silence and thus unable to voice his opinion on the matter, simply takes the key and puts it around his neck. it is thus that remiel and duma become the guardians of the sandman mythos' hell ironically creating a "happy ending" in hell. duma 
Characters_created_by_Neil_Gaiman DC_Comics_angels DC_Comics_fantasy_characters Judeo-Christian_mythology_in_comics Mythology_in_comics The_Sandman