Castle Grayskull is a great craggy skull shaped lair located on the planet Eternia. It serves as He-Man's base of operation, and also serves as the locus of his power.

It has been the target of numerous attacks by Skeletor, Hordak and the Snake Men, all of whom believe that the secrets inside will allow them to conquer Eternia.

Castle Grayskull, which resembles a gigantic skull, is the source of the Power of Grayskull. Inside the Castle lives the Sorceress. Part falcon and part woman, she possesses the magical ability to fully change herself into a falcon. The Sorceress is among the most powerful magic-wielders on Eternia. She has limited use of the power held within Castle Grayskull, but only for the purpose of its protection. She also communicates telepathically with He-Man, and was the person responsible for granting Prince Adam the power to become He-Man.

As part of the very popular 80's toyline, a Castle Grayskull toy was released, to almost unanimous adoration. It had its share of gimmicks; an elevator, trap door, draw bridge etc.

Bob got mad today and stomped on his Castle Greyskull. Now he'll have to use his Ewok Village action playset, instead.

castle greyskull by Wordcrimes December 17, 2007

Castle Greyskull

Someone with grey / greying hair.

castle greyskull is here everybody, only one hour late today.

where the FUCK is greyskull.

Castle Greyskull by the aceman March 24, 2009

castle greyskull

Slang for multi-level carpark at Monash University in Melbourne Australia, named so for its similarity to Gargamel's castle on the smurfs.

Where are you parked? Castle greyskull

castle greyskull by Embo September 22, 2005

Castle Greyskull

When an older woman takes out her dentures and then goes down on you. You then pull out and ejaculate all over her face, then you throw her husbands ashes on her face!!!

I gave Elaine a Castle Greyskull last night and she just wanted more but there were no ashes left now we’ll have to wait until Ash Wednesday now.

Castle Greyskull by anonymous February 21, 2026