Mr. E

Mr. E, born Victor Jay, is an investigator, hero, and in his everyday life, a "wealthy sportsman." Though he had apparently been active for some time prior, his only known case came in early 1940. Mr. E was able to connect a series of seemingly unrelated murders to the victims' mutual financial connections to the Snead Oil Company. Investigating at company president J.P. Snead's mansion, Mr. E found Snead worriedly throwing a note into his fireplace. Mr. E hurriedly went in and retrieved the mostly burned note, which threateningly demanded a million dollars by that Friday at midnight. While out driving the following day, Mr. E was run off the road into the river by his archenemy, the Vampire. He survived the crash, and the following Friday, hid out at Snead's mansion prior to the scheduled handoff. Hiding out on top of Snead's car, Mr. E was brought to Vampire's hideout, but the latter was expecting him.

Vampire captured and bound Mr. E, and told him that he was indeed responsible for the previous murders. Vampire left Mr. E tied to a chair in his cavernous hideout, returning to the surface to take care of Snead. Snead paid the ransom, but Vampire also demanded his interests in the oil company in exchange for his daughter, Betty. Mr. E was able to free himself by throwing his chair down a flight of stairs, interrupting just as Snead was signing over his company. J.P. and Betty escaped with the money and interests, and Mr. E and the Vampire left soon after, both fearing pending police intervention.

Mr. E's name is seemingly a pun on "mystery" rather than a proper abbreviation.