Achilles is the most feared of all the Greek warriors travelling to Troy.
He is, by myth, half-human, half-god, created by the union of Peleus and Thetis, a sea-nymph. He is a great warrior, almost unbeatable, but his sense of honour tips into pride and stubbornness.
His friend and lover is Patroclus, another great Myrmidon warrior. They are inseparable.