Dead by Daylight launched in 2016 as an asymmetrical horror game from Behaviour Interactive, with one killer hunting four survivors. The Doctor, Herman Carter, arrived in 2017 with The Spark of Madness chapter, bringing electric shock attacks and constant mad laughter. That laugh became his signature in matches, warning survivors he was near. Clips of it spread through horror gameplay videos, streams and meme edits, where the sound alone now stands in for a deranged killer losing his mind, even for viewers who have never played the game.