Nemesis is the Greek demigoddess of Vengeance (voiced by Linda Hamilton) and the leader of the Infernal Retribution Service which punishes mortals for offenses committed against Greek gods. Nemesis can turn her forearms into weapons.
Nemesis does really not like not being able to impose a smiting. Demeter summons her to smite Pan, the king of Satyrville, for his inadequate offerings at Demeter's harvest festival and building a temple to himself. There, Nemesis mentions that, even as a demigoddess, she does not have her own temple - although she does do a time share, what temple and with which god is unknown. She is said to be the daughter of Zeus and Hera In some account she was the daughter of Nyx And Erebus.