It is a big red bull that drags a black cart with it. 300 years ago, the Bull Zord was created by the Guardians. The Bullzord was uncontrollable and rampaged across the countryside. The Grand Shogun ordered it to be hidden forever. At present time, a young Guardian decendant was able to communicate with it and freed it. Jayden gives Cody the Bull Disk, which Cody's dad gave him and they are able to tame it.
The Bull Zord and its cart forms the giant robot, which has shoulder cannons and a final attack which unleashes a burst of symbol power from the disk loaded on its head.