Great back grounds omg! I can't think up good back stories for my Sims but they make their own stories! Right now I have two households I'm playing. The Nova house and the Death (changing it to Reaper) House. So the Nova's started out with Sapphire Nova who is a light blue alien (which I had difficulty dressing cause I love using light blues in outfits xD). She joined the doctor career and even meet a couple love interests. But then Clifford (I called him cliff) came to the hospital one day and they hit it off really well. They started dating and then got married and not long after that she was expecting! And to my surprise she had twin boys. Xiao and Felix. We made Cliff ( who wanted to change his name to Kaine) a vampire I n the middle of the pregnancy because it was already his aspiration from when I started playing him so I kept it. So to my surprise I was editing little things here and there in CAS and found out Felix is a vampire?? I know for a fact when the tried for them Kaine/Cliff was human but I was happy because it's a strange adorable family! Xiao Felix's twin brothers a full alien and those two became adorable toddlers so Sapphire and Kaine wanted another. So not long later and a new house in the process, Zia our alien baby girl was born. But I guess I must have been having to much time playing as the boys who were now kids because Sapphire got pregnant again and I did not plan or expect this one but naturally I love big families so I made room for anither child and said that's it for awhile with them. At least into the boys are older and have thier own place. So the day comes and Sapphire gave birth to Draegan, Illyana, and Alexandra. The vampire triplets. So now our little home is full with toddlers kids and teens and I have no clue what to expect next.
Now the Death/Reaper family I just created just to try to cheats out on but I like them so I might fix em up a bit and play them also xD. So the main sim is Persephone. Her name was actually Grim Reaper but i added him to my household and edited him in CAS and turned him into a female who is so cute. And if I'm not playing her house she actually does come and reap dead sims! But to do alot of the romance interactions she has to mortal and all so I just took her grim Reaper trait off temporary and got her pregnant with this cute little female I believe her name is Ivy. I did just make them earlier so hers is alittle fuzzy. But there is a teen vampire also in the house hold so maybe I can get her and Felix together! So many Ideas!