Regigigas is a legendary Pokemon known as the Colossal Pokemon, created to move continents in Pokemon lore, and its anime appearance gave fans this distinctive cry. In the scene, the giant awakens and calls out its name in a shortened, guttural form before using its immense strength, a moment that fans clipped and shared because it sounds both powerful and unintentionally funny. Since then it has circulated on soundboards and in edits as shorthand for something ancient, slow and overwhelming finally waking up.