Momus or Momos (μῶμος) was in Greek mythology the god of
satire, mockery, censure, writers, poets; a spirit of evil-
spirited blame and unfair criticism. His name is related to
μομφή, meaning 'blame' or 'censure'. He is depicted in
classical art as lifting a mask from his face...
（*Mw=mos), a son of Nyx, is a personification of mockery and
censure. (Hes. Th. 214.) Thus he is said to have censured in
the man formed by Hephaestus, that a little door had not been
left in his breast, so as to enable one to look into his
secret thoughts. (Lucian, Hermotim. 20.) Aphrodite alone was,
according to him, blameless. (Philostr. Ep. 21.)
[L.S] - A Dictionary of Greek and Roman biography and
mythology, William Smith, Ed.