"By the power of Grayskull" was the command chanted by Prince Adam as he raised his sword to transform into He-Man. What was the name of He-Man's mortal enemy?

He-Man was constantly battling the evil, skull-bearing Skeletor. While he wasn't the only foe this hero faced, he was the skull behind the other half of the mighty Power Sword; He-Man possessed the other half.

Asked by Jennifer Sinclair · Last updated 5 years ago · 670K views · SOURCE