Pulsefire is a series of Parallel Universe skins in League of Legends. Set in a dystopian future after the Cog Era, it features champions augmented by cybernetic enhancements and equipped with Chrono technology. Between the branching of infinite realities, Chrono-enforcers clash with fleeing fugitives, temporal warlords, and the unrelenting march of Praetorians through the vicissitudes of space-time. Pulsefire officially encompasses two skin lines: Praetorian and Pulsefire.

A time fugitive who built his Pulsefire suit from scratch, Ekko improved on the Remembrancers' technology, crafting a modified Chronobreak device that allows him to make short temporal jumps, create time breaks within a singular timeline, and to collapse them all into a single, anomaly-free singularity.