During The Iliad, Odysseus' enemies were mainly members of the Trojan army, specifically Hector. The gods on the Trojan's side were also his enemies, notably Hera, Zeus (for a while), Ares, Hermes, Hephaestus and Apollo.
Note that many of the gods switch sides depending on which side was winning at the time.
During The Odyssey, Odysseus' biggest enemy becomes Poseidon, as Odysseus offends Poseidon by blinding his son Polyphemos. Other enemies Odysseus has include:
Polyphemus and the other cyclops,
Scylla and Charybdis,
Apollo (after slaughtering the cattle of Helios)
and
Penelope's Suitors.
Chat with our AI personalities
because they were all jealous of him and wanted his power.
He did what had to be done to help his brothers to defeat the enemies!
Doctor who is awesome allons-y
Odysseus defeated the Cyclops by blinding him, and (to add insult to injury--literally!) told him that his name was "No one."
One of Athena's allies is Odysseus, a hero who she helped a lot during his journey home in the Odessy.