Normally I don't play with them much, but I figure this time around I would make a game file just to check them out. Something I discovered was they are very similar to what the ghost in TS4 does as far as glowing different colors, such as when they are flirty they will glow pink. They will even glow while they are in their disguise.

Also I accidently learned that while they are in their disguise, humans don't know that they are aliens, unless they do something to reveal what they really are. This is a very nice change from the way it was in TS3, now hopefuly when they decide to release the different occult creatures such as vampires, witches, and such, they will do the same thing for them.