The main villains are the Frightful Four. The Frightful Four need a fourth.
Future member of The Defenders Captain Ultra tries out.
So does a guy named The Osprey, who never goes anywhere.
As does future member of the Rangers and future Agent of SHIELD Texas Twister.
Weird he started as a bad guy. They eventually settle on Brute. Only at the end of the issue, he turns out to be…
..Evil Reed Richards. The first of many. This one is from the Counter-Earth created by High Evolutionary.
Impossible Man is hanging out with the FF, too, so lots of humor in these issues.