Contessa Shannon Copur is one of the pre-made NPC grand vampires in Downtown from The Sims 2: Nightlife. She can be made playable by befriending and asking her to move in, or by marrying her. Shannon has the same facial structure as Genesis Lam.
Shannon's SimDNA in SimPE confirms that she had tanned skin and green eyes before she became a vampire. Her name is randomized when Downtown is generated. The name "Contessa Shannon Copur" is only referenced in the game files. Even though she has blonde hair, her SimDNA in SimPE confirms that her natural hair color is actually brown.