A fragment of a document by 4th-century BC Greek historian
Theopompus suggests that Hyperbolus was the son of Chremes, but surviving ostraka prove that his father's name was actually Antiphanes. Some ancient sources claim that Hyperbolus was from a slave family, though the fact that his father had a Greek name makes this unlikely. Hyperbolus was a
demagogue, and an allusion in
Aristophanes' play
The Knights suggests that he, like
Cleon (another demagogue of the late fifth century), supported an ambitious Athenian foreign policy. The precise details of his political career are unknown, but he seems to have been a member of the
boule and possibly a
trierarch. Hyperbolus was a frequent target of the authors of
Old Comedy. The first to satirise him was supposedly
Hermippus;
Plato the comic poet and
Eupolis wrote plays about him; and there are allusions to Hyperbolus in seven of
Aristophanes' surviving plays, from
Acharnians in 425 to
The Frogs in 405 BC. By contrast, only a single "contemptuous" reference to Hyperbolus is found in Thucydides. In 416 or 415 BC, Hyperbolus proposed an ostracism, and was himself ostracised. In 412/411 BC he was murdered on
Samos. According to Thucydides, the Athenian general Charminus was involved in the killing. Theopompus claims that Hyperbolus' body was stuffed into a wineskin and thrown into the sea; this may be derived from a comedy. ==Ostracism==