Amphitryon

In Greek mythology, Amphitryon, son of King Alcaeus and grandson of Perseus, was asked by his uncle, King Electryon of Mycenae, to take over his throne while he fought the Taphians, who had killed his sons. Before leaving, Electryon promised his daughter, Alcmene, to Amphitryon. However, Amphitryon accidentally killed Electryon, and fled to Thebes with Alcmene. There, King Creon pardoned him, but Alcmene refused to marry him until he avenged her brothers' deaths. Amphitryon succeeded after defeating the Teumessian fox and the Taphians, the latter of whom was defeated after their king’s daughter, Comaetho, betrayed her father.

While Amphitryon was away, Zeus disguised himself as him and slept with Alcmene, leading her to become pregnant with Hercules. When Amphitryon returned, he too slept with Alcmene, and she became pregnant with his son, Iphicles. Alcmene gave birth to twins: Iphicles, a mortal, and Hercules, a demigod.