Due to Zeus' giving birth to Athena, Hera was angry at his actions. She then gave birth to Hephaestus. He was an ugly and deformed child. When Hera saw the unsightly appearance of her son, she threw him from Mount Olympus, crippling him forever. Afterwards, Hera spread a false rumor that it was actually Zeus himself who hurled Hephaestus down from Olympus. Hephaestus landed in the sea, where he was found and raised by the Thetis, a kindly Nereid. However, Hera's act of cruelty haunted Hephaestus, and he sought revenge.