In Dinosaur Planet there were two Warp Stones. They were refered to as Swap Stones and allowed the player to switch between Krystal and Sabre at will. However they would not allow switching characters if they had either a Spellstone (Powered or un powered.) or a Krazoa Spirit. Rocky is the known of Krystal's Swap Stone, while Rubble is the name of Sabre's Swap Stone.