Thesites is a character in Shakespeare's Troilus and Cressida. A malformed Greek, Thersites wanders around the Greek camp commentating cynically on all around him. His protector, Achilles is the only person who doesn't despise him (rather ironic given what Homer says about his death)
Ina similar way to the Fool in King Lear, Thersites often provides the most insight into events. He speaks the famous lines
. . . lechery, lechery; still,
wars and lechery; nothing else holds fashion."