Gehn is a fictional character from the Myst video game series, created by Rand and Robyn Miller. He is introduced in the game Riven: The Sequel to Myst as the antagonist and the father of Atrus, the main protagonist. Gehn is a powerful and ambitious writer of Age books, which allow him to create and manipulate worlds. In the game, Gehn's obsession with power leads him to exploit the D'ni civilization and its resources. He believes in the superiority of his own creations and seeks to control the Ages he writes. His character embodies themes of hubris and the consequences of unchecked ambition.