Likewise, does Wonder Woman have a twin sister?
Nubia (also sometimes Nu'Bia) is a fictional character appearing in DC Comics publications and related media, commonly depicted as the second Wonder Woman and long-lost twin sister of the superhero of the same name. Created by Robert Kanigher and Don Heck, Nubia debuted in Wonder Woman (vol. 1) #204, (January 1973).
Beside above, who is Wonder Woman's arch enemy? The current Cheetah, Barbara Ann Minerva, is a former archeologist and treasure-hunter who sold her soul to the plant-god Urtzkartaga for power and immortality, not realizing she would be bound in eternal servitude to him. She, aside from Circe and Ares, is arguably Wonder Woman's archenemy.
Keeping this in view, who was Wonder Woman's sister?
Nubia
Who did Circe fall in love with?
The story of the Latian king Picus is told in the fifth episode (and also alluded to in the Aeneid). Circe fell in love with him too; when he preferred to remain faithful to his wife Canens, she turned him into a woodpecker (lines 308–440).