Polybius speaks of him in terms of high praise, as a man of a generous and warlike disposition, and skilled in political transactions. In 185 BC, when the king had to fight against some discontented Egyptians, Aristonicus went to Greece and engaged a body of mercenaries there.
Polybius describes Aristonicus as a skilled warrior and politician, known for his generosity and military prowess. In 185 BC, he hired mercenaries in Greece to support the king's efforts against rebellious Egyptians.