The Norns in Norse mythology are three female beings known as Urd, Verdandi, and Skuld. They represent the past, present, and future, respectively. The Norns weave the fate of gods and humans, sitting at the base of the Yggdrasil tree. Their role emphasizes the importance of destiny and the inescapability of fate in Norse culture. Additionally, they embody the complex interplay of time and existence, influencing the outcomes of both divine and mortal lives.