The Make-a-Wish Foundation contacted actor Ron Perlman on behalf of Zachary, a young boy who wanted two things: to meet and become Hellboy. Ron Perlman dressed up in the Hellboy get-up and went to visit Zachary in character.
Ew, but good Halloween party idea! I would just use my favorite recipe (spice?), add jam to the inside and pipe a (caramel?) frosting to look like brains. Or maybe skip the jam because that would be a weird flavor combo.