U.R.T.V.

URTVs, short for U-DO Retro Virus, is a species in the Xenosaga games. Dmitri Yuriev is the genetic father of all 669 URTVs.

Notable URTVs

 * #666 Rubedo
 * #667 Albedo
 * #668 Citrine
 * #669 Nigredo