(A+) Athene
Athena tells Odysseus to reveal his identity to Telemachus, as there is no point in keeping it hidden from him. Telemachus can also help his father on his quest for vengeance, as he is completely trustworthy.
Odysseus told the swineherd if his lord didn't return as Odysseus said he would, the swineherd should kill him so that other beggars wouldn't try to deceive him.
He did not say anything to Poseidon; rather, he blinded Polyphemus, the god's cyclops son, because of his pride (his hubris) Odysseus revealed his true identity to the cyclops, and in return Polyphemus told his father (the resulting hamartia.)
he told odysseus his background.
Circe told him about the Siren and Scylla and Chrybdis
Odysseus convinces the swineherd that he is being truthful by describing in detail items that only Odysseus would know, such as the fig tree he received as a child from Ithaca. He also mentions knowing the layout and details of Odysseus' palace, which further proves his identity.
Circe told Odysseus how to reach the Underworld.
Athena
eurylochus
Athena told her father Zeus that Odysseus wanted to go home to see his wife and son so Zeus told Hermes to go and tell Calypso to let Odysseus leave her island. She agreed and told Odysseus to make a boat and she gave him food and wine for his journey
Odysseus was shipwrecked, and had no way of getting home. She did not help Odysseus get home until she was told to by the Gods.
Eurylochus is a coward he would have left the men as pigs when circe changed them while Odysseus wouldnt leave them. He also told the men to eat the cattle and sheep while odysseus told them not to. They are also both in a form of command on odysseus's ship. Odysseus is couragous and headstrong.