Board Thread:Warhammer 40k General Discussion/@comment-25149066-20140730083800/@comment-6078851-20140815150554

i'm not well versed in the alpha legion's lore but while it's uncertain who guilliman killed it's almost certain that it was alpharius or omegon: the alpha legion were almost identical in looks across the legion, including their primarchs, but the primarchs were still leagues ahead in terms of martial prowess and it would have been obvious to guilliman if he was actually fighting a regular legion-aire instead of one of his brother primarchs.