Ephialtes
4. Plutarch (Plut. Alex. 41) mentions Ephialtes and Cissus as those who brought to Alexander the intelligence of the treachery and flight of Harpalus in B. C. 324, and were thrown into prison by the king as guilty of calumny. The play of the comic poet Phrynichus, called " Ephialtes," does not seem to have had reference to any of the above persons, but rather to the Nightmare. (Meineke, Hist. Crit. Com. Graec. pp. 152-154.)
From William Smith (ed.), Dictionary of Greek and Roman Biography and Mythology. Text provided under a CC BY-SA license by Perseus Digital Library, http://www.perseus.tufts.edu, with funding from the National Endowment for the Humanities and Tufts University. Data accessed from https://github.com/PerseusDL/canonical-pdlrefwk/ on 17 October 2026.