Thetis, a prominent Nereid, is central to the story of Achilles.
For example, Thetis helps Zeus and Hephaestus and provides magical items or advice to mortals like Achilles.
Witness these names: Nestor, alias Puith; Neptune, alias Poseidon; Oileus, alias Pendre; Priam, alias Hogath; Phoebus, alias Onewakax, alias Apollo; Pales, alias Shugansitha; Pelides, alias Peleus; Saturn, alias Kronos; Thaleia, alias Musae; Thestor, alias Suko, alias Bayrith, alias Calchas; Thetis, alias Arama, alias Mi, alias Mara, alias Achill'ya, alias Argos; Venus, alias Seinalt, alias Vishnu, alias Mira, alias Thor, alias Theo; Vulcan, alias Anawahah, alias Ir, alias Agni, alias Hefaste'yan; Calianessa, alias Vritta; Hecla, alias Jah, alias Tyronia, alias Nileus; Nemertis, alias Itra, alias Prometh'ya, alias Ari, alias Mithra; Opsendes, alias Miletus, alias Brahma, alias Ishaka, alias Davetat, alias Sakaya, alias Morototha; Pherna, alias Holasa, alias Iao, alias Crite, alias Thammus; Spieo, alias Pelides, alias Hecla, alias Vulcan; Thor, alias Padua, alias Hermes, alias Belus, alias Hiroth, alias Yossammis; Thoa, alias Thor, alias Neptune, alias Orion, alias Aph, alias Thulis; Quiurnus, alias Vishnu, alias Ahambre, alias I'isna, alias Atys, alias Etus.
Athena, in a rebellion to put the old fellow in a strait-jacket, "and would have succeeded had not Thetis brought to his aid the sea-giant Ægæon," probably a war-ship.
Mount Pelion is also the setting for the wedding of Peleus, a mortal hero, and Thetis, a sea goddess.
The wedding of Peleus and Thetis on Mount Pelion is a key event in Greek mythology, symbolizing the union of mortal and divine and setting the stage for the epic events that would follow.