The Iliad

• Hera — the fiercest; snubbed in the Judgment. Would eat Priam raw (Zeus says nearly this in Book 4).
• Athena — the other loser of the apple. Hands-on: she engineered Pandarus's truce-shot and will do worse later.
• Poseidon — separate grudge: he built Troy's walls for King Laomedon (Priam's father), who then stiffed him on the wages. Troy has a history of contract fraud with gods.
• Hephaestus, Hermes — mildly Greek-side; minor roles.
• Thetis — special case: not anti-Troy, purely pro-Achilles.

• Aphrodite — won the apple; protects Paris (and her mortal son Aeneas, a Trojan prince).
• Apollo — Troy's great protector, patron of the city. Book 1's plague was him defending his priest. He'll matter enormously late in the poem.
• Ares — nominally pro-Trojan, but really pro-carnage; fights wherever the blood is.
• Artemis, Leto — with Apollo; minor.
• Xanthus/Scamander — Troy's own river god; you'll meet him spectacularly in Book 21.

• Zeus — officially neutral, personally fond of Troy ("dearest of cities to me"), currently rigging the war for the Greeks to lose — but only temporarily, as a favor to Thetis, and knowing Troy is doomed anyway

. He's not a partisan; he's fate's executor with private regrets.