Murlocs are amphibious fish-like creatures from Blizzard's Warcraft games, first seen in Warcraft III and widely known through World of Warcraft. Their signature attack cry is a gurgling mrgl sound made as they charge in groups, which players quickly turned into an impression and a meme. Clips like this Logan version circulate on soundboards and in stream chats because the noise is short, distinctive and instantly signals a chaotic swarm. Even outside gaming, it is used as a generic silly monster voice.