However, a ' karma kill' cannot be avoided without some experience. Sometimes when someone in the team acts like an idiot but then gets karma charged, the teammates will normally laugh and leave the idiot die to death. In-game, a ' karma charge' is done when a Charger (either AI controlled or human controlled in Versus or Scavenge) charges someone and pummels him or her to death without the survivor's teammates helping. In these series, he invented the catchphrase ' Karma Charger is always watching'. Then Criken picked it up and used it in his 'Left 4 Dead 2 Funny Moments of Getting Owned' series and from there it was launched into memedome. From there the term reappeared in several videos, including ''" data-type="undefined" target="_blank">Why Modded Servers Scare Me'.
The term first appeared in YouTube user gNatFreak's video ''" data-type="undefined" target="_blank">Expert Demo Fails 2'. This special infected was notorious for being spawned by the Director, attacking lone players, and pummelling them to death or charging them off cliffs/buildings. This meme's history can be traced back to when the Charger was introduced in Left 4 Dead 2. It was popularized by machinima maker and 'Left 4 Dead 2 Funny Moments of Getting Owned' series director Criken. Karma Charger is a meme exclusive to the game Left 4 Dead 2.