In Episode 3-6, whenever Darth Vader enters a place, like the Mustafar conference room, the little (cleaning?) droids scurry away from him & almost always let you know when he is coming. Can anyone think of a reason for this? All I could come up with is that they are scared. Yet they are these little droids w/o the sophisticated hardware of astromech or protocol droids!

MTFBWY
SidiousSithOut