Please my Lord don't kill me. I'm sorry, i-i promise that I will never kill a human soul again. Just let me go and i will be out of your way. I swear. I'll leave this town, in fact ill leave the entire continent of Europe. "Hm. I would let you go. But. You did kill multiple humans who pay me taxes and how do I know that you won't come back one day and try to get revenge?. That's what I thought." -Darius and Ace's conversation before Darius killed him.
Ace Dubois was a Vampire who would run rampant throughout the 17th Century, before ultimately being put down by Darius Salvatore for his mischief.