Hastrubal is from the same batch of legionaries as Alfonzo (must be a good batch :-)) and is a brother of sorts too Alfonzo, Hastrubal was in the rival gang that Alfonzos cult destroyed making Hastrubal a orphan as well, but his path to the legion was different, he was taken into the Cult of the serrated heart, were he made a name for him self fast as a smart and powerful warrior, even at this early age Hastrubals grasp of tactics was almost unnatural and this was spotted by the agents of the Ancient Warmonger Sis Tak and so Hastrubal was recruited and joined the scouts of his company.
There Hastrubal kept up his growth in tactics and added strategy to his skills, showing the same aptitude there. As a Legionary Hastrubal is large and powerful the embodiment of a Astardes of legend. He has the bronzed charismatic look of his beloved Primarch Lorgnar Aurelian.
Hastrubal fights smart and hard and is as devote as any WB but not chaplain book smart. Hastrubals field is war.