Sion is a Noxian undead juggernaut in League of Legends, originally released in 2009 and fully reworked by Riot Games in 2014 with a new voice and ability kit. His ultimate, Unstoppable Onslaught, lets him charge across the map, and players shorthand it simply as his R. Clips of the new R activation spread through highlight reels, streams and soundboards because the cue is instantly identifiable to anyone who has faced him in lane, and it now works outside the game as a shorthand for a reckless, unstoppable rush.