• The narrator, who names himself
Horn, although he has other names at other times. He is charged by the leadership of his home town of New Viron to find Caldé Silk and return with him. • Nettle, Horn's wife, who with him ostensibly wrote
The Book of the Long Sun, the story of Silk. They have settled on the island of Lizard, where they have a paper-making business. • Hoof and Hide, their twin sons, who are, with their future wives, the ostensible compilers and editors of
The Book of the Short Sun. • Sinew, their eldest son, who has a jealous and adversarial relationship with his father. • Maytera Marble, a "chem" (sentient robot) from
The Book of the Long Sun. She has gone blind, and asks Horn to find her an eye when he returns to the Whorl. • Mucor, also from
The Book of the Long Sun, who lives with Maytera Marble on a small island and has the reputation of being a witch. She has the ability to project her consciousness across, apparently, any distance. • Krait, an
inhumu who journeys with Horn for a time in the first book. • Seawrack, a mysterious and beautiful one-armed woman who was raised beneath the sea. She also travels with Horn. • Oreb, Silk's pet bird, a night
chough, who was also a character in
The Book of the Long Sun. Oreb can speak, but only in utterances of two syllables: "Good Silk! Fish heads!" • Babbie, Mucor's pet hus, whom she sends to travel with Horn. Hus are native to Blue; they are something like intelligent eight-legged boars, with sharp, curving tusks. • Pig, a blind man of giant stature who is walking to the West Pole of the Whorl to have his sight restored. He speaks with a thick accent: "Out with it" becomes "H'out wi' h'it." His true name is unknown. • Hound, a shopkeeper who lives on the Whorl and travels with Pig and the narrator for a time. He lives in Endroad with his wife, Tansy, where they sell lanterns, nails, tack, and so on. • Hari Mau, a leader in Gaon, where ''On Blue's Waters'' opens. • Jahlee, an
inhuma the narrator strikes a deal with in Gaon. Later, he passes her off as his daughter. • Inclito, an important man in Blanko, with whom the narrator stays for most of ''In Green's Jungles''. He lives with his mother, Salica, his daughter Mora, and Mora's friend Fava. • Beroep, Aanvagen, and Vadsig of Dorp, in whose household the narrator is imprisoned for much of
Return to the Whorl. • Wijzer, a captain from Dorp who initially points Horn in the direction of Pajarocu. • Caldé Bison and Mint, characters from
The Book of the Long Sun who, in Silk's absence, are the leadership of Old Viron on the Whorl. • Patera Remora, from
The Book of the Long Sun, the Prolocutor of New Viron. • Daisy, Hoof's eventual wife, who writes the last pages of the story. ==Notes==