Kung Zhu Pets may start out as cute and cuddly hamsters; but once they have completed battle training, they transform into lean, mean, fighting machines. When a Kung Zhu Pet reads the special code at the entry to the Battle Arena or on a Tablet of Zhu (provided with battle armor), it will power up into Battle Mode. In Battle Mode, there is a distinct personality change in the hamster — complete with special fighting sounds and behavior. A Kung Zhu Pet will operate in Battle Mode for up to 3-1/2 minutes. Check out this YouTube video to see the fierce warriors in action: