Gemini

Castor and Pollux were twin brothers with different fathers - a pretty good trick, even for the Greek Pantheon. Castor’s dad was king of Sparta. Pollux was a son of Zeus. So Castor was mortal and Pollux was not. Zeus had seduced their mother, Leda, in the form of a swan. So it makes a bit of sense that the boys hatched from an egg. According to myth, the twin brothers got along well with each other, but not with their cousins. At one point, they were so busy feuding with their cousins that they left their sister, Helen of Troy, alone with Paris and inadvertently started the Trojan War. Castor was fatally wounded in battle. Unwilling to live forever without his brother, Pollux gave half his immortality to his twin. Thereafter the brothers spent half their time in Hades and half on Olympus. There are worse things, I suppose, than splitting your time between heaven and hell.