I know it's not required of you, but I do know that some Cast Members who work at the Mansion create an unofficial back story for their character. Did you?
I did! I was originally a maid for Master Gracey, back before the Mansion turned into its current form. I was married to one of the butlers, and we lived together in the servant's quarters.
Unfortunately, I made the mistake of having a torrid affair with one of the kitchen staff, a cook to be exact. When my husband found out, he went mad, and killed us both in a fit of rage and jealousy. I've been spending my afterlife trying to make up for my mistake, and earn my husband's forgiveness. But rumor has it that he flung himself into the nearby river, never to be seen again, living... or dead.
I love that sort of stuff! You guys really go out of your way to make your characters come 'alive', even though few will ever hear their stories.
I don't know what happened to it, but there used to be a book we kept of everyone's stories. Aside from just ours, we also created unofficial biographies for some of the Mansion's more famous residents.
There's a website I found not long ago that has a few of them, but nowhere near as many as we had in the book. It was fun to come up with this stuff. It made the job, and who we were, more real to us!