One of the [[primarch|"Twin Primarchs"]] that [[alpharius_omegon|Alpharius Omegon]] was split into. [[Alpharius]] was more publicly known while [[Omegon]] was kept initially in the shadows as a hidden "Double [[Primarch]]". They are the genesires of the 20th [[adeptus_astartes|Legiones Astartes]],  the [[alpha_legion|Alpha Legion]].
alpharius