User blog comment:Hitsuji Mamoru/Servant Creation Room 2 : Guess of the Who/@comment-28209103-20170326051146/@comment-28209103-20170326125109

Both, the General are famous for doing something reckless to the point that he lose half of his army just to gain advantage against stronger enemy but the real sadistic part like keeping enemy barely alive or the gruesome method of his NP comes from the fictional character, btw the Natural Born Genius comes from the fictional chara and he's a twisted genius with peculiar taste..

Btw I forgot we can't look at NP here but his NP basically re-animating his dead army using their grudge as fuel and let them devour enemy,, basically a zombie apocalypse without the infection.. like JAlter the malevolence gathered will inflict status down on enemy, and ally alike.

As of the grudge of the dead army it's because they're an abandoned army, facing the enemy alone in disant land where their homeland refused to aid them and ultimately they died for nothing. This dude is the general of such Army, while he alone counted as the servant but like Jack he is pretty much a representative of the wraith as the avenger.

For the Ficitonal Character, he's simply in it for the fun, for him war are nothing more than a nice chess game.. i'll reserve the more obvious hint for this guy for later.