Star Guardian is a series of parallel universe skins in League of Legends that follow the story of a group of high school students who choose to become cosmic protectors and must battle cosmic enemies threatening the universe. However, they consequently learn of the anguish and perils associated with their newfound roles as self-doubt, desperation and the daily life of a high school student.

Given time-shifting powers by the First Star, Ekko approaches life with a relaxed and casual demeanor. Why care if you get infinite do-overs? But when it comes to facing monsters alongside the Star Guardians, he's deadly serious, using his command over time and space to keep Valoran City safe from the darkness.