User blog comment:Hitsuji Mamoru/Servant Creation Room 2 : Guess of the Who/@comment-31726296-20170521035038/@comment-31726296-20170526022903

He is but Saber is   More well known what he  Possessed. Last hint his np was given to him from a servant that was know for commanding armies".. And yes he is a Cannon servant from the fate. I hope this helps.