Aslan is too Narnia imo. I actually dislike the books, so I may be a bit biased.
Achilles is too well known to be taken seriously.
If you like the Greek warrior idea..
Evander: In
Roman mythology,
Evander was a hero who brought the pantheon, laws and alphabet to Rome before the Trojan War.
Evander was born to
Mercury and Carmenta, and his wisdom was beyond that of all Arcadians.
Aeneas: The hero of the
Roman poet
Virgil's epic Aeneid.
Aeneas, the Trojan son of Anchises and
Venus, wandered for years after escaping from the ruined city of
Troy.
Damon: The legend of
Damon and Pythias symbolises friendship amd loyalty.
Hector:
Hero of
Troy in the Iliad.