Sam

History
Sam first meets Quinn in the VR game Power Fighters under the alias Blood Evolver along with his friend Nate Snell, where they battled and he lost to Quinn. Seeing Quinn's fighting ability and his quick progression as he gets stronger, he quickly becomes a fan and tries to find out his identity to no avail.

During the Inter Base Tournament, he runs into Quinn inside an armor shop and quickly becomes friends, helping him to fight off a group of high level ability users who try to steal from Quinn.

During Sam's time in the medium faction known as The Crows, Sam found out about the existence of vampires and while Kazz Cain suggested they kill him Quinn had a soft spot for humans and wished to save as many as he could so Quinn decided to turn Sam into a vampire. He was turned into a vampire in chapter 602