Sprens are a fictional concept from the popular fantasy series, The Stormlight Archive by Brandon Sanderson. They are described as manifestations of emotions, often taking the form of small, colorful, and glowing creatures. Each Spren is linked to a specific type of emotion or natural phenomenon, such as honor, joy, or fear, and they play a significant role in the magical system of the series. In the world of Roshar, Sprens interact with humans and can influence their feelings and actions. They are essential to the abilities of the Knights Radiant, who can bond with specific Sprens to gain magical powers. This bond allows them to harness the unique properties of their Spren, making them vital to the story's development.