Oooh, a foundling! I've heard rumours that could happen, and also rumours of twins! I got an alien abduction once but it was very annoying as it reversed the character's personality...
The swimming pool without an exit ladder is a good way of killing off characters in order to create ghosts - so long as you bury the urns on the lot. I made a haunted monastery that way once, and I invariably try to create at least one ghost in each lot. You could create the dead army that way. Hmmmm...or maybe Saruman after he's been punished by the Valar? I did make a mini website dedicated to ways to kill Sims characters once
I managed to cure Sauron's Guinea Pig disease though by making him go to bed and drink lots of coffee all day long. Morgoth had to support him by going and getting a job