Which episode first features the spirit Wan?

The episode that first features Wan is “Beginnings, Part 1.” It is the first half of the two-part seventh and eighth episode of The Legend of Korra’s second season, Book Two: Spirits.

The story begins when Korra’s memories are restored through visions of her past lives. She learns about Wan, a young man who lived 10,000 years earlier, when humans lived on lion turtles and dangerous spirits roamed the wilds. Wan receives firebending, is exiled from his city, and gradually forms a friendship with spirits.

Part 1 introduces Wan’s role in the Avatar mythos and shows how he accidentally frees Vaatu, the spirit of darkness and chaos, from Raava. Part 2 continues his journey as he learns the other elements and becomes the first Avatar. A common mix-up is choosing “Rebel Spirit,” the opening episode of Book Two; that episode introduces the season’s spirit conflict but not Wan himself.