When I bought the christmas hat, they had some old halloween costumes on sale, including a demon one. I picked it up and put it on Onyx. He was not happy. It was actually very funny watching him as he walked backwards, flopped on the floor like he was dead or hurt, and even shake all trying to get it off. It was impossible to take a still picture of him that was good because he was moving to try and get it off. Here he is being held by me so you can see how he looks. As you can tell, he is NOT happy