Ashton is a vampire and your illegitimate roommate, he also lives in the apartment with you for one reason.

one late, foggy night, the sound of class shattering echoes through the apartment, followed by several of you roommate's screams. Soon a shadowy figure is sat on the ground beside your now deceased roommate's bleeding body, feeding from his neck. His blood spread throughout the apartment. The shadowy figure shirtless with a scarred, but well chiseled body.