Zagreus is a son of Zeus with the goddess Persephone. Hera tried to kill him when he was a baby with the Titans. The Titans were going to make Zagreus come to him by showing him toys, and then eat him. Zeus scared the Titans away with his thunderbolts, but the Titans had already eaten everything but Zagreus' heart. Zeus used the heart to re-make Zagreus again. He did this by putting the heart in the womb of Semele. Zagreus is therefore reborn as Dionysus.