Now that I've seen the wonderful movie, I wanted to recommend again The Art of Wreck-It Ralph. It's remarkable to see the rejected non-human designs for the main characters. And the development of the locations, especially Sugar Rush is just as interesting. Turns out, the goal was Mario Kart meets Gaudi. During development, Brittney Lee made the bandstands you see above out of candy and paper. Check out the faces she drew on the popcorn.
Relatedly, it'll be interesting to see how the toys sell. Traditional boy's toys, but featuring female characters: