THIS IS NOT SUPPOSE TO BE OFFENSIVE, I AM JUST STATING MY OWN OPINION FOR HUMOR.

So what is this "Big 4" thing? Like I think it's like Hiro from Big Hero 6, Jack Frost from Rise of The Guardians, the girl from Bolt and Rapunzel from Tangled. I have seen others with Jack Frost and Merida and Elsa and the guy from How To Train A Dragon whom I forget his name.

Like when you say that I think of the historical Big Four from WWI (yes that is their title just stick with me). It was a group of the leaders from the United States (Prez. Wilson), Italy (Vittorio Orlando), Britain (David Lloyd George), and France (Georges Clemenceau). I know it sounds weird but I just learned it in school so it's stuck in my head.