Read this excerpt from The Iliad.

Thus Chryses pray’d.—the favouring power attends,

And from Olympus’ lofty tops descends.

Bent was his bow, the Grecian hearts to wound;

Fierce as he moved, his silver shafts resound.

If you're on Agamemnon's side, who is the antagonist?

Apollo
Chyseis
Achilles
Achaians