About the AUEdit
The Big FourEdit
Like Guy Hiccup likes to come up with new ideas and ways, build, name and show them to those that can also use them, like a family of homeless cavemen. Toothless is portrayed as Belt, as the two journey to Tomorrow with the family.
Rapunzel being a girl that enjoys being out her home and loves learning about new things, easily casts her as Eep. She can also be featured as cave-girl, as cavemen are known to paint drawings on the walls of their home just like Rapunzel, as she paints on the walls of her tower and castle bedroom in Corona.
Since the Croods and Guy are a group and family of cave-people of prehistoric times, they most commonly plays themselves (much in the same way that The Incredibles and Frozone plays themselves in the Superhero AU).