This article explores a highly striking phenomenon termed metalepsis. A metalepsis is a fictional and paradoxical transgression of the border between mutually exclusive worlds that cannot be transgressed in our actual world. The hand of the animator reaching into the diegesis of his creations as well as characters communicating with the audience, escaping to the world of their creators, or altering their own worlds are all different types of metaleptic transgressions. Even though this phenomenon appears extensively throughout the history of animation, it has not been theorized in animation studies thus far. This article introduces transmedial narratological conceptualizations of metalepsis as an analytical tool for animation. It discusses a wide range of examples, testing the applicability of the framework to various animated forms.