There is a theory that they are the same species.
The ones in beetlejuice are based off the ones in dune though.
Just so I'm The most clear, are these vampire types (cryptids and the like) or supers?
That's pretty rad actually. I like the idea of kill bot brainwave pairing going sideways.
IT would be a cool variation for a mastermind orchestrating the whole escape would be a member so powerful it triggered the escape of the rest of us when it broke containment. Then we also have a super...
I really like the natural barrier of the desert you have established. As for the means to keep pairs as pairs, maybe collars or anklets that explode if a certain distance is passed for a certain amount of time (If they get 50 feet apart, the anklets or collars start beeping for 30 seconds then...