-1x-1x-1 dark matter cube

The -1x-1x-1 dark matter cube is a cube all cubers fear. It is composed of less than nothing and can consume cubes to grow in power. dark matter cubes will consume any cubes within the immediate vicinity until their negative mass has been counter balanced. This is the weakest variant of dark matter cubes, but higher (or rather, lower) counts are exceptionally rare, and as such are less feared. Should a dark matter cube higher than 4x4 appear, Armageddon incarnate would be unleashed. The -infinity x -infinity x -infinity cube, if constructed, will consume the universe and create an anti-universe made of dark matter cubes.