The Mysterious Mr. Enter is an internet critic known primarily for producing videos where he reviews works of animation, both good and bad, as well as providing opinions and critiques for every single episode of "My Little Pony: Friendship Is Magic. his channel can be visited here.
His review of the My Little Pony: Friendship Is Magic episode "A Dog and Pony Show" was removed due to a copyright claim by Hasbro, thanks to YouTube's broken copyright system. The video was not uploaded anywhere else on the internet, so it is now considered lost.