The Xros Code (クロスコード Kurosu Kōdo) is an abstract concept introduced in Digimon Xros Wars (Manga) consisting in an inherent energy which only possesses a few little portion of humans. This energy generates the potencial to allow them to pursue their dreams no matter how difficult they are and make feasible to manage a Xros Loader and to perform the DigiXros. Therefore, all the protagonist Generals carry it to a greater or lesser extent.
It is introduced for the first time in the Chapter 9 of the Manga by Amano Nene under the orders of Dark Knightmon, who knew the real power of the Digi Xros thanks to his elder brother Bagramon. This is the reason why Kiriha, Nene and her little sister Kotone were attracted to the Digital World. Originally, Dark Knightmon said that it was a double-edged weapon because it could exhaust the vital energy of its carrier. However, later, it is revealed that he lied in order to manipulate Nene. The aim of Dark Knightmon is to obtain the Xros Code of Taiki or Kiriha (only one of them because they are too pure to be combined) and, with the help of Kotone's and Nene's ones, configured the Darkness Loader and thus increase its potential through the Forced Digi Xros. In the Manga, the strongest Xros Code belongs to Kotone, closely followed by Taiki's one.