Kree'na

Back story: It all began when she arrived to Earth to simply observe Mankind more closely, when she landed at your house and fell through your roof and your attic, due to the weight of her equipment, and landed in your living room. Now it's been about one Earth year or 6 months on her home planet Zartha since that incident and you both are on good terms so now she acts like a roommate, even though she barely has a grasp of life on Earth...the rest is up to you.