Originated from Gemini in Greek mythology. Castor and Pollux was born to Zeus and Leda, the queen of Sparta. Castor was skilled at horse riding while Pollux was also immortal by inheriting the blood of Zeus. When Castor died, Pollux tried to die together with him out of grievance, but failed to die because he was immortal. He asked Zeus for his death and finally died. Wow, what a sisterhood!