Rancis Fluggerbutter is one of the secret characters that can be unlocked in the Wreck-It Ralph section of Disney Crossy Road! In order to unlock him, all you have to do is unlock the 'Citizens of Sugar Rush' set of characters. These characters include Princess Vanellope, King Candy, Taffyta Muttonfudge, and Candlehead. Once you unlock these characters (in no particular order) you will unlock Rancis Fluggerbutter!
If you know how to unlock any other Disney Crossy Road Secret Characters, make sure to tell us in the comments below!