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.

The Remembrancers' worst fears have been realized. Emerging from tears in the fabric of spacetime, hordes of faceless, robotic marauders appear across the multiverse, destroying everything in their path. Fiddlesticks is only a single unit in this endless invasion force, assimilating any technology it comes across, and eradicating all life.