The world is in danger and the only way to SAVE is to create a BEAST! Conduct an experiment using the Beast Creator to create one of TWO BIG CATS! Watch as the Stealth Strike Cats Beast Creator Chamber releases real Bio Mist & pressure builds. Pull down on the Emergency Lever to drain to liquid and reveal the beast inside! Which Big Cat will you unleash from the Beast Lab? Will it be the TOXIC TIGER or PRIMAL PANTHER? The Beast Lab is an interactive playset with 80+ lights, sounds and reactions that bring the experiment to life. 3 LR44 batteries are included. 6x AAs are required.