Modulok comes to the Fright Zone with a plan to take over Eternia, with the help of some forbidden weapons, located in the palace. He packs himself in a box and leaves it on the palace doorstep and the heroes bring it inside, look at the contents (Modulok unassembled), and can't make heads or tails of it. So they take it to Castle Grayskull. While they sleep, Modulok reassembles himself and acquires an invincible shield weapon from the Room of Forbidden Weapons, giving it to Hordak. Hordak then uses it to attack Grayskull, but Skeletor appears, too, to do the same thing. Basically, He-Man saves the day using his Thunder Punch power, given to him by the Sorceress.
1985, Series 4.
Packaged with Thunder Punch He-Man and Modulok.
Scans courtesy of Black.
Used with permission