Legends of Lucha Libre 8-bit Luchador Pixel Puzzle Kits Official Legends of Lucha Libre Pix Brix Masked Republic Luchador Mask. Build a 8-bit pixel version of the Masked Republic luchador mask. Display your pixel puzzle mask build as art by hanging it on the wall. Box includes Pix Brix, PB Tool, and instructions. About Pix Brix: Pix Brix is a revolutionary pixel art puzzle brick that utilizes a unique patented connection system. This simple 1 piece system allows the user to create 2d and 3d pixel art by building vertically, horizontally, and even off center.