Haha good luck.
I have made some 'not my norm' sims and played them from time to time. I have a mean, hates-children lady in charge of an orphanage - she makes the teen look after the kids, they all do the cleaning and the teen cooks and never goes to school (there are two toddlers to look after). The mean woman locks her room door so they can't watch her tv or use her en-suite bathroom, and she sneaks off to the criminal career at night. But somehow, I enjoy playing the rest of the household more than her...
Then I had a mean, jealous sim married to a lady who lived in a flat. He was vicious to her and she often cried. I got fed up of him after a short while and pretended he'd chucked her out and she went to live elsewhere.
I think the trouble with mean and horrid characters is they need too much work. They naturally fall into a pattern of being 'normal' if you don't keep an eye on them. My hates-children sim is often sneaking out of her room while I'm not looking to go and chat nicely to the kids. My jealous guy would be shouting at his poor wife one second then sitting down with her to have a chat on the sofa.
The jealous trait is probably the best one for an out-of-the-ordinary character, but even then it still doesn't quite live up to expectations.
