Blue X is a masked individual influenced by the persona "Red X". It is unknown whether or not the two are connected by any other means, however it is shown that Blue X and Red X do not think or act on equal terms. The idea of Blue X indeed being Red X was shot down when their personas were noted to be quite different from one another. Beginning as a small-time vigilante that likes to follow his own rules, Blue X made himself periodically known to the Teen Titans. Particularly finding an interest in Robin, claiming they are alike and accusing Robin of knowing why if he looks deep enough inside himself. Blue X is overall a shady person, leaving the Teen Titans, and anyone else, confused to his true agenda. Just the way he likes it. He's been known to act on his own drive, occasionally thieving from high-classed targets, or big-wigs of the city. This, however, does not seem to hinder his ideal of "justice", as Blue X still considers himself a borderline vigilante.