The Man In The Mystery Mask On their way back from the Baxter Building, Reed, Ben and Johnny are attacked by the Mystery Villain. This is an impossible sight for them to believe at first, because Reed himself was the Mystery Villain in the past.
They all recall how once years before Reed came up with the costume to try and force Ben and Johnny to work together as a team. What follows is a reprinting of the story "The Mystery Villain!" from Strange Tales #127.
After the recollection, Reed prevents the Fantasticar from crashing, and the trio battles the Mystery Villain and destroy all his super weapons. When the Villain is defeated, Mr. Fantastic unmasks him, revealing the mystery villain to be Nick Fury. Fury tells them that he wanted to test out new S.H.I.E.L.D. weapons, and couldn't resist attacking the FF in this costume to try them out. This angers the Thing enough to take a swing at Fury, who teleports away before Ben could land the punch.