DOPPELGANGER versus MR FANTASTIC
The Enemy Within! (Marvel comics)
Where: Fantastic Four #366 When: July 1992
Why: Tom DeFalco & Paul Ryan How: Paul Ryan
The story so far...
Adam Warlock, a cosmic weapon who reached omnipotence, purged himself of emotions to create two gestalt entities. From all his good came The Goddess, and from his negative emotions, The Magus.
Seeking total domination over the Marvel Universe, the Magus uses his fantastic cosmic power to exist in a pocket reality, manipulating the pawns of his game from afar.
To the bewilderment of Thanos; a man whose motivations are similar bit distinctly different; the Magus wages war on the heroes through the creation of doppelgangers using items resembling the fabled cosmic cubes. Crucial to his war on the heroes, the battle between dark shadows and crucial figures within the superhero community. Figures like Reed Richards!...
Full Article: http://secretearths.blogspot.com/2007/09/doppelganger-versus-mr-fantastic-enemy.html