This characteristic is also seen in the villians in nearly every Disney movie. They all pretend to do something but in actuality what they are doing is all a part of a plan to get what they want.
Look at Dr. Facilier, a.k.a. The Shadow Man, from the movie The Princess and the Frog. He takes advantage of Lawrence's dire want to become a prince, and transforms him to look like Prince Naveen using a voodoo talisman, causing Prince Naveen turn into a frog. The Shadow Man only cares about money, so his plan was to have Lawrence, who looks like Prince Naveen, to propose to and marry Charlotte, daughter of a really rich man named Big Daddy, so he can kill Big Daddy and split the riches between himself and Lawrence.