The Story Behind the Mysterious ‘A113’ Appearing in Numerous Animated TV Shows and Films

New York Magazine associate producer Christine Nguyen has created a video for Vulture that explains the story behind “A113,” the mysterious code that appears in numerous animated television shows and films.

It’s hidden in movies and TV shows everywhere. In The Simpsons, The Hunger Games, Avengers, American Dad, Mission: Impossible, Doctor Who. And in every Pixar movie ever. But what does it mean?