Wrex is the gigantic robotic bulldog of Johnny Rancid, which appears in "Can I Keep Him?".


Wrex started to terrorize the the Jump City citizens with Johnny. The Teen Titans showed up to take down Johnny and Wrex. Johnny ordered Wrex to attack the Teen Titans. While Wrex became distracted in chewing up a light pole, Starfire and Cyborg finished him off with a combined attack. Unfortunately, Johnny escaped.