In the 2003 TV series episode "Still Nobody", X-Ray is the moniker of a member of the Turks street gang, who is actually an undercover informant for the masked vigilante Nobody.
Despite their arrangement, it was imperative that they keep up appearances, so whenever Nobody received information from X-Ray, he then had to fight/chase him in order for the ruse to work.
The Turks leader Jencko eventually caught wind of X-Ray's double-crossing and had a car pick him up and deliver him to Turks headquarters Jencko confronted him about the allegations, intending to punish him, but Nobody Leonardo, and Raphael intervened, with Nobody sending X-Ray to get the police.