A mysterious character from the "Teen Titans" animated TV show, Red X was originally an alternate identity for Robin but someone later stole the name and costume. His motives are unknown, but are more often self-serving than altruistic. He made an appearance in the show's comic book spin-off, Teen Titans Go! Red X uses a variety of skill and gadgets to defeat anyone who stands in his way. The identity of Red X has never been revealed.