Refuge for our heroes, Castle Grayskull stands proud in this detailed set by Mattel Brick Shop. Recreate the battle between the Heroes of Eternia and Skeletor, complete with 16 NanoWorld figures, special effects, and authentic details. The clash of good and evil is yours to build and display. Collect all the Masters of the Universe building sets by Mattel Brick Shop and build the movie; each sold separately.