The Hypercube is a circular object that can contain a incredibly large amount of items regardless of mass and volume, similar to a bag of holding. It uses 16-bit power to store things. It appears round, and the reason for this is that the denizens of 8-Bit Theater cannot perceive it as cube shaped, and so it seems round to their eyes. Red Mage is known to possess one. It is used to hold the Armoire of Invincibility, since it crushed Fighter at one point. It has also been called a "Summon Materia", and a "Summoning Cube". It apparently causes madness if you look into it, which Red Mage does on multiple occasions, perhaps explaining a few things.