The T. rex Crown Jewels are several valuable objects owned by King Groosum, ruler of all T. rexes. They are a bent gold crown, a claw-shaped scepter, a long metal chain, and a bronze dinosaur skull. An inscription on the crown threatens death to anyone who touches it. The jewels were stolen by Thickhead McBrick, who, with the help of Braxus and Fangetta, framed Teggs and Gipsy for the deed. Later Arx found the real jewels and returned them to Groosum so his friends could go free.