Cain makes numerous mentions of his homeworld, apparently a Hive World, though he never mentions a name or any feature which could lead to it being identified. At one point in the archives, Inquisitor Amberley Vail speculates that Cain may not in fact know the name of his own homeworld. However, he shows a definite affinity for underground passages and has a natural sense of direction when underground. He claims that his parents were killed while serving in the Imperial Guard, which is why he was sent to be trained as a Commissar. However, it has not been stated in which regiment they served. His record at the Schola Progenium where he was educated and trained shows that his marks were on the low end of average in everything save sports and combat training. He also had a clear disciplinary