A vampire knight, an evolution that was not available to Quinn, for he only had the option to go evolve into a vampire lord. The reason for this was because a vampire knights position was something that could only be given by a vampire leader in the first place.
The way the system explained it, rather than an evolution it was seen more as a title. However, a powerful title that still did physically change the vampire's structure. It was a title that could only be given to vampire nobles, and it was best to give it to a strong one. For the family members would see them as just below a vampire leader.
Looking at Leo, Quinn honestly couldn't think of a better vampire to make his knight. He was stronger than all of them before he had even become a vampire, and he couldn't imagine what his strength was now. The one thing that did surprise Quinn, was Leo was a vampire noble already.
Something that took Quinn months, Leo had managed to obtain in a short amount of time.