Antonio Salieri

Wolfgang Amadeus Mozart! My purpose for being is to kill you. Your honor, your music, your legacy...I shall kill it all. Should you manifest upon this land, I will be sure to kill you with my own hands this time. Gottlieb...a man who was loved by God. A most excellent Servant who will, whenever ordered by his master, brutally attack and destroy all assigned targets. Never once does his own humanity interfere. Though typically calm and collected, his mental state is compromised as a result of becoming an Innocent Monster. His fusion with the Man in Grey, a being of myth not unlike the Grim Reaper, has only exacerbated the problem. The instant he sees Wolfgang Amadeus Mozart, he will ignore his Master's orders and become nothing more than a harbinger of death. (Source: Fate/Grand Order profile)