[ZeroForever]

if your going for ideas on the Loli mansion it would be easier to make a list of generic things found in mansions.
Things done are Mistress (main room), Servant (gallery), Daughter/Toy (Bedroom/Toyroom).
Other things commonly associated with large mansions.
Garden, Pool, Kitchen, Maids/Butlers, Antiques, foreign treasure, Large Bathrooms, servants quarters, stables, car garage, etc..

In the 3rd one it mentions a Realtor which is a easy drop in for a new guest. If your feeling it you could also do a group of people for the full staff replacement skit, stranded bus fare or such.
As for the 'undead' evil theme, there's so many left it's innumerable. Outside the box are ones like Sutibaru's, generic ones are vamps, mummies, etc..