Castor and Pollux Castor and Pollux Castor and Pollux (or in Greek, Polydeuces) were twin half-brothers in Greek and Roman mythology, known together as the Dioscuri. Their mother was Leda, but they had different fathers; Castor was the mortal son of Tyndareus, the king of Sparta, while Pollux was the divine son of Zeus, who seduced Leda in the guise of a swan. Though accounts of their birth are varied, they are sometimes said to have been born from an egg, along with their twin sisters Helen of Troy and Clytemnestra. In Latin the twins are also known as the Gemini (literally "twins")
Amphion and Zethus Amphion and Zethus Amphion () and Zethus (, "Zēthos") were, in ancient Greek mythology, the twin sons of Zeus (or Theobus) by Antiope. They are important characters in one of the two founding myths of the city of Thebes, because they constructed the city's walls. Amphion and Zethus were the sons of Antiope, who fled in shame to Sicyon after Zeus raped her, and married King Epopeus there. However, either Nycteus or Lycus attacked Sicyon in order to carry her back to Thebes and punish her. On the way back, she gave birth to the twins and was forced to