Colin
Colin asked Stuart Gibbs:

I was just re-watching Scooby Doo: Mystery Incorporated, and just realized that the mystery man who is behind all of the mysteries of the show is called "Mr. E." That is the same name of the woman who is behind SPYDER, "Ms. E." of your Spy School books. Is that a coincidence? I think so, and is that a common nickname or name for mysterious evil leaders?

Stuart Gibbs That is a complete coincidence. So maybe it is more common than I suspected.

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