His name is Wallace the Mad King, but he could just as well be called Wallace the Rad Bro.
Wallace the Mad King is a rabbit, this is true, but Wallace is also half of an art project with his owner's boyfriend. The Brooklyn-based rabbit monarch and his human collaborator are constantly pushing the boundaries of rabbit art. As Wallace's human partner wrote on YouTube about this video,
This event marks the release of an epic accomplishment. I have been collaborating for the past year with my girlfriend's pet rabbit to create performance art and "happenings" that capture this rabbit's capabilities and worldly passions. In a million years, neither Wallace nor I would have guessed that our creative endeavors would take this route but after such a long journey we arrive at this significant moment.
The projects have an emphasis on creating temporary installations or "happenings" that the rabbit will eventually eat and destroy (like any good mad king). By far Wallace and his human's most successful project so far was the construction of a replica of the Red Keep from Game of Thrones, from which Wallace reigned over the apartment before he chewed it into mulch: