Leeroy Jenkins is an Internet phenomenon named for a player character created by Ben Schultz in Blizzard Entertainment’s popular game, World of Warcraft. The character has become popular thanks to a machinima video of the game that circulated around the Internet. The phenomenon has since spread beyond the boundaries of the gaming community into other online and mainstream media.
The character’s popularity resulted in his inclusion in the World of Warcraft (WoW) Trading Card Game. Reflecting the video in which he appears, Leeroy is a detriment to the rest of the player’s team, exhausting them for the current and following turns. For gameplay reasons, his effects are not entirely negative: although no one else can attack, Leeroy can attack instantly should the player repeat Leeroy’s famous shout, and his attack is unusually high compared to the cost of playing him.