The term "Knight Radiant" refers to a group of magical warriors in the Stormlight Archive, a series of epic fantasy novels by Brandon Sanderson. Each Knight Radiant is bonded to a unique spren, granting them special powers and abilities. They are dedicated to protecting humanity and upholding ideals known as the Immortal Words. There are ten orders of Knights Radiant, each associated with different attributes and powers. These orders include the Windrunners, who can manipulate wind and fly, and the Lightweavers, who can create illusions. Together, they play a crucial role in the ongoing struggle against dark forces in the series.