odysseus and penelope's slaves: a primer.
eurycleia: odysseus' childhood nurse, as well as telemachus'. her backstory is briefly mentioned (book 1): she is the daughter of ops, bought by odysseus' father laertes when she was young. specific mention is made that laertes never slept with her, in order to keep peace with his wife anticleia. (her name has the opposite meaning of odysseus' mother's.) at the time of the odyssey she is old, and among named slaves has probably been with the family the longest. she is the only character who recognizes odysseus unprompted (and he threatens to kill her about it). they trust her heavily throughout the plot to kill the suitors; afterward, she handpicks the other enslaved women who have slept with the suitors, so that odysseus can execute them. if i were to beg for one thing, it would be that you consider what living in close proximity to her owners for so long might do to her psychologically, and how her experience with laertes might skew her view of the "disloyal" women.
eurynome: another older woman who attends penelope (and eventually odysseus).
hippodameia and autonoe: two younger slave girls who attend penelope.
actoris: a slave penelope mentions once (book 23) as the only person besides her and odysseus who knows the secret of the olive tree bed, because she used to guard their room. actoris was given to penelope by her father. it's possible that she's already dead by the time of the odyssey, as she never appears in person.
the unnamed traitors to penelope: three times in the odyssey, we hear the story of penelope unweaving a shroud for laertes at night to hold off the suitors. two of those times the suitors tell it, and say that a female slave told them the truth of what was going on. later penelope tells the beggar-who-is-odysseus, and she says that they caught her in the act with the help of her slave girls.
dolius, his unnamed sons, and their unnamed mother: dolius is another slave given to penelope by her father (book 4). now an old man, he seems to look after odysseus' father laertes, who no longer lives in the main house. father of melantho, melanthius, and six other sons by a sicilian woman who also cares for laertes. it is unclear whether she is the mother of all dolius' children, or only the six sons present in the farmhouse. dolius' first and last appearance on page is in book 24, when he greets and kisses odysseus; in the text, he never learns that odysseus has executed two of his children.
melantho: the daughter of dolius, who penelope raised "like a daughter" and pampered (book 18), though clearly only to a point. she is sleeping with the suitor eurymachus (also book 18). the text doesn't offer insight into how she actually feels about eurymachus.* she has two scenes, and in both insults the beggar. both odysseus and penelope berate her and call her a dog. melantho is often assumed to be the one who betrayed penelope's weaving ruse to the suitors, but this is never stated in the odyssey.
[*EDIT: the translations i have read and have on hand to check (fagles, wilson, fitzgerald, lattimore) describe melantho variously as sleeping with eurymachus, making love to him, being his lover, or being his sweetheart. to me, these words indicated an action or a role rather than her internal feelings or state of mind. but there are also translations that say she loved him. the greek phrase in question is μισγέσκετο καὶ φιλέεσκεν—the former word seems undoubtedly sexual, and the latter derived from phileo, which also does, or can, denote love or affection. this is basically the extent to which i am able to discuss the greek, but as far as i can tell, both translations (sexual or non-sexual) are valid here. it's ambiguous.]
melanthius: the son of dolius and brother of melantho, a goatherd who sides (vehemently) with the suitors. it is said that eurymachus is his favorite (book 17). he insults the beggar and eumaeus multiple times as well. he is present for the bow contest, helping the suitors, and when the slaughter begins, he brings them armor and weapons. odysseus orders the two herdsman on his side to tie him up, hoist him into the rafters, and torture him. they leave him tied until after the fighting, when "the men" (presumably odysseus, telemachus, eumaeus, and philoetius) cut off his nose, ears, and genitals to feed to the dogs, then chop off his hands and feet.
the unnamed hanged women: twelve (out of fifty) enslaved women whom eurycleia handpicks for death, because they were sleeping with the suitors (according to her, book 22). all the enslaved women are hiding during the slaughter; afterward, eurycleia goes to them, calls the twelve, and brings them to odysseus, who has them clean up the corpses and blood. odysseus means to execute them with swords when they're done, but telemachus decides to hang them instead, specifically to deny them a clean death. melantho is presumed to be one of these twelve. like with her, the text offers no insight into how they feel about the suitors.
eumaeus: a swineherd with an extensive backstory told in book 15. his father ctesius was the king of syria, but his enslaved nurse ran away and took him with her, intending to sell him, when he was too young to know better. she died on the ship, and laertes bought him in ithaca. like melantho, he was brought up there by the queen, in proximity to odysseus' younger sister ctimene. when they were older, ctimene was married and eumaeus sent to the country. he is well-off enough to own a slave of his own. in the odyssey, eumaeus personally takes care of the beggar, tells him all about the situation in the palace, and tries to protect him from the suitors, though he is openly skeptical of anything the beggar has to say about odysseus. when telemachus returns to ithaca, it's eumaeus he goes to first, greeting him like a family member. odysseus finally trusts his identity to eumaeus right before he wins the bow contest. he promises to give him a wife, wealth, and a house near the palace (and freedom, implicitly? unsure). eumaeus participates in the slaughter, the torture of melanthius, and possibly the executions. if i were to beg for one thing regarding eumaeus, it would be to consider how often in ancient literature, the only enslaved characters who are portrayed with dignity or sympathy are those who were, at one point, nobility.
mesaulius: a slave who serves and cleans up after eumaeus. eumaeus traded for him while odysseus was away, with his own money (book 14).
philoetius: a cowherd and overseer. like eumaeus, he is kind to the beggar and expresses loyalty to odysseus. he says that he would have run away, except that he still holds out hope for odysseus' return. odysseus reveals himself to philoetius along with eumaeus and promises him the same things (wife, wealth, a house). also participates in the slaughter, torture, and executions.
medon: house slave who has become a favorite of the suitors, but reports on them to penelope (book 4). telemachus tells odysseus to spare him (along with phemius, the bard) due to medon caring for him when he was young. medon then comes out of hiding to corroborate this and profess his loyalty. toward the end, medon hears the people of ithaca assembling to avenge the suitors and tries to discourage them, saying that he personally saw a god helping odysseus.
a lot of other unnamed slaves are mentioned in passing. i love the passage in book 20 when odysseus overhears an enslaved woman grinding grain as she prays to zeus for relief from the suitors. to odysseus, this is an omen, but it's also a very human moment which has nothing to do with him. there are more like this; i couldn't include all of them.
i wrote this up because i see a lot of people who are more familiar with retellings of the odyssey than the epic itself getting interested in these characters, often without really understanding a) that they are enslaved and b) how they function in the odyssey. both those things are important to grasp, if you're going to question both the assumptions of the cultural world of the poem and many knee-jerk modern responses to it—including what is, or isn't, deemed suitable in a retelling.