The theme of appearance versus reality is at the core of the relationship between Athena and Odysseus. Athena is the maven of makeovers. Her most memorable illusions in The Odyssey are disguises for herself or Odysseus. At the beginning of the epic, she appears to Telemachus as Mentes, king of the Taphians, an old friend of his father who has just stopped to visit in Ithaca. This allows her to encourage the prince and lead him into an expository discussion of the problems in the palace. However, she most famously appears to Telemachus as Mentor, an Ithacan adviser who helps to protect the prince from the murderous suitors and to guide him through his coming of age.
On several occasions, Athena changes Odysseus' appearance, either to disguise him or make him look even more formidable than he normally would. As Odysseus prepares for a banquet in his honor with the Phaeacians (8.20–22), for example, she alters his appearance to make him look taller, more massive, and more splendid in every way. When Odysseus returns to Ithaca in Book 13 of The Odyssey, Athena disguises him as an old beggar, even going so far as to shrivel his skin, remove the "russet curls" (13.456) from his head, and dim the fire in his eyes.
Of course, Odysseus is no stranger to disguise. During the Trojan War, he posed as a beggar to enter the city; he also initiated the ruse of the giant wooden horse filled with Greek soldiers, a story retold by the bard Demodocus, not realizing that the hero himself is present, during the visit to Phaeacia (8.559 ff.).
