From June 13, 2025 9am PT to June 15, 2025 11:59pm PT receive a free Gift when you make a purchase of $75 or more in a single transaction on select Monster High items on this page https://creations.mattel.com/collections/monster-high-gift-with-purchase (“Qualifying Purchase”). To receive Gift With Purchase, select the item to add
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Become the Master of the Universe when you build Eternia's mythical fortress and reveal the secrets hiding within Castle Grayskull!
Every detail of this castle has been faithfully recreated, right down to the working elevator, turrets, and throne room with trap door. The Jawbridge is even activated by the Power Sword. Build this massive fortress using 3,802 pieces, then battle for Eternia with the six included micro action figures: He-Man, Skeletor, Man-At-Arms, Beast Man, the Goddess, and the Sorceress.
- Mega Construx Signature Series with premium detail and 3802 pieces
- Buildable Castle Grayskull that folds open and closed, with three floors and six areas, throne room, command center, dungeon, two secret doors, and working Jawbridge, elevator, and turrets
- Jawbridge is activated by the Power Sword
- Throne room features its iconic trap door
- Six highly detailed, super-posable micro action figures include He-Man, Skeletor, Man-At-Arms, Beast Man, the Goddess, and an exclusive Sorceress, signature weapons and interchangeable accessories including iconic weapons rack and the Orb of Grayskull
- He-Man, Skeletor, Man-At-Arms, Beast Man, and the Goddess figures feature exclusive decoration
- Includes deluxe vintage-inspired packaging, collector's poster, and a MEGA Construx easter egg
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