An attendant of King Milinda who was sent by the king to escort Nāgasena from the monastery to Sāgala.
On his way he questioned the elder about the soul and we are told that the latter talked to him from the Abhidhamma to such effect that Anantakāya became a convert (Mil.30‑1).
He is probably to be identified with Antiochus, attendant of Menander. Milinda’s Questions, I.xix., xlii.