[@NorthernKraken]
Well, I looked at a short list of traits a Mary Sue character has and Vitius doesn't seem to fit most of them, but I'll take the universal test to be sure. 

Edit: Got to question 15 in the test when I realized that he's not a Gary Stu. Well not in this case anyway. He has his flaws just like anyone else, human or otherwise. And he isn't good at everything, like making art for example, or diplomacy since he's used to fighting rather than talking.