Frank's spear was given to him by his father Mars, the Roman war god. The end has a dragon's tooth which, when planted in the ground, causes a Skeleton Warrior to appear. The Skeleton Warrior, whom Frank dubbed Gray, would follow any order given to him by Frank as long as it is short and given shortly after he is summoned. Frank knows he must be specific in his orders or Gray may end up injuring or killing his friends and/or allies. The spear could only use three dragon teeth (called charges by Mars) and after the three charges were used, the spear would vanish. There was also a waiting period, twenty-four hours, between charges to allow the dragon tooth tip to grow back fully before it could be used again.