Prepare yourself for some Powered-up action! Heroes of Goo Jit Zu Goo Shifters are here! Your favorite stretchy, squishy villain Rock Jaw has returned in his Primal Form and is ready to be powered-up by you! Crush Rock Jaw's Core to activate his "Goo-formation"! Watch as the Goo inside Rock Jaw's body changes before your eyes to release his inner power! Rock Jaw's in his Primal Crocodile Form! This awesome Goo Jit Zu toy features "Chomp Attack" action! Rock Jaw's huge teeth-filled jaws can open up wide for him to battle against Primal Form Thrash! Both Primal Thrash and Primal Rock Jaw have a unique Goo Filling and "Goo-formation"! Rock Jaw is Super Squishy. Squeeze him and see his Squishy body move and stretch. Goo Jit Zu Goo Shifters are a Gooey way for kids to play with no mess. Primal Form Rock Jaw can stretch up to three times his size. Best thing is he will always come back to his original shape! The Heroes of Goo Jit Zu need YOU! Transform the Goo and power-up with the Goo Shifters!