Thread:Whovianfan/@comment-5616350-20161001202118/@comment-6945486-20161008011014

I think the Illusive Man would summon this servant to help get him the Holy Grail the samurai assassin Sasaki Kojiro. The heroes rescue the heroic spirit from his control by defeating Illusive Man near the final battle with him.

http://legendsofthemultiuniverse.wikia.com/wiki/Sasaki_Kojiro