With all respect to Mr. Avellone, I don't consider the Fallout Bible canon. It was established as a sort of structural framework, but I hold no reverence to it. If something can be included that is entertaining and can be explained, then I'm going to follow that path. Letting a pdf document limit you is silly.
I guess I'm silly then.
2 Words, mad scientist(s).
.(this also applies to the logic of the Nightstalker)
Of course, it's always possible to create more.
But I'd rather have them stay dead.
I mean, if there is a point in bringing them back then it's great but they just bring them back for the sake of bringing them back isn't very good IMO.