9 parts Complete Serena is one of a kind, literally. She is the last of her kind, her species is know as the K-Series, a human engineered version of the Xenomorph. During a battle, her entire species was almost wiped out, leaving her as the only one living. She grew, she evolved, she made friends, and she made powerful enemies. In the end, she has to make a decision, one decision could kill her, and all hope of her species. The other could make her great, and give her the strength she needs to finally get her revenge on the pure-bloods