Evil Mary Poppins and the Mad Hatter will both be a part of Poohniverse: Monsters Assemble. Directed by Rhys Frake-Waterfield, Poohniverse: Monsters Assemble is an upcoming horror crossover movie ...

Chambers continued on to say that Peter Pan will have some other evil allies in Monsters Assemble, in the form of killer twists on beloved childhoood characters Mary Poppins and the Mad Hatter.