So I was thinking the create a villain team thread in Champions does well. And pulp villians tend to be over the top sotheortically the same thread should work here. so...
The Society of Set
Darrian Wentworth appears to be just your typical upper crust blue blood. However he is a bit unusual in that his mother is Egyptian. Though most people are nice about it, he has long resented how most people have acted as though there was something a little wrong with that. Then came the stream of artifacts "rescued" from Egyptian tombs he decided to do something about it.
His ultimate goal would be to kill all the explotiters of Egypt and collect all the looted treasures or himself. But he knows he cannot achieve such an ambition alone. So after obtaining a mask of Set and outfitting it with lenses to help him see in the dark, and alter his voice. He obtained a staff and sharpened on end like fox teeth. Finally the ordered a large quantity of sand from Egypt and mixed a deadly poison in it. He then started wealthy peoples homes and used the funds to start gathering the society.
Now that it's in place he intends to focus more on those who have taken from Egypt and as Set finally raid the British Museum.