He tried many methods, techniques, and even black magic to harm Mark, but nothing could kill him. He was injured but then got better in the blink of an eye.
In the end, they became a partner and even after that, he only knew a way to kill him which was to take his heart. It sounds easy, but with the healing ability and the skin as hard as metal, nothing could touch the heart of Mark Winter.
Vincent thought that man was invincible. He was the only pure vampire left. He was one of the people who created the strong District 2. He was an ambitious person who would not let anything stand in his way. He had the power of the District 2 army in his hand. Many people respected him. Vincent believed everything in District 2 was on the man's wish.
