The Avengers, Vol. 1 Annual #14A

Fifth Column
The Avengers join forces with the Skrulls under Zedrao's rule in order to stop the machinations of the Skrull Zabyk. They are making their way through the station when they encounter a Skrull impersonating Thor, who they quickly identify and defeat. They continue on, encountering the real Fantastic Four, and eventually identifying them as such. They are, however, unable to stop Zabyk's plot: the hyperwave bomb is detonated, freezing all Skrulls in whatever form they were in at the time the wave struck.
Release Date: 1985