It’s a fully functional Rubik’s Cube sculpted from a model of a brain. At least I think it’s a model. It was designed by Jason Freeny. After a quick Google search (the best way to determine these sort of things), I have determine that in all likelihood Jason is NOT a zombie or a zombie hunter, a brain surgeon, headhunter, or in any way involved in brain removal or the sale or trade of human or animal brains. Therefore I conclude that this Rubik’s Cube Brain is most likely sculptural plastic and not flesh. We have also calculated the odds of you getting a massive headache while trying to solve this: 86%.