Taxidermist!

Taxidermist Millicent Clyde, a wicked witch of taxidermy, is trying to behead Optimus Prime, remove Dusty Crophopper's parts, and take over a part of Imaginationland with her master, Chaos. Chaos wanted to make her adopted sister (his daughter, Maleficent) proud. Her next victim... maybe Paddington Bear? She is responsible for making the magic of the Tablet of Akhmenrah fade away slowly. She is also a friend to the evillest marshmallow bunny in Imaginationland, Bun Bun. She also had an uncle in the form of Dr. Octavius "Dave" Brine. She's too evil and bad!