 Many of the Black Knights are not loyal to Zero and often split off into renegade factions or act without his knowledge.Lelouch is held responsible for a terrorist attack when a Black Knights faction had gone renegade without following his instructions.He later goes to kill his father only to discover that he was already killed by Schneizel, his half-brother; however, it is later revealed to be Schneizel's scheme to get Lelouch executed and to take C.C.