Lux is a champion in Riot Games' League of Legends, a team-based online game where she is known as a bright, optimistic mage who uses light-based magic. Her in-game voice lines, including her distinctive laugh, are often clipped by players and shared as short audio files for memes, edits and stream soundboards. Because the laugh is short, clear and instantly recognisable to League players, it has become a handy reaction sound for wins, jokes and playful taunts, even for viewers who do not play the game regularly.