Over the years Mattel filed for patents on a number of Masters of the Universe-related ideas. The language employed is rather difficult to get through, but the illustrations are a lot of fun. I’ve collected some of them here. Special thanks to Manic Man for locating several of these patents, including Blast Attak, Rotar/Twistoid and Gyrattacker!

Included patents and illustrations:

• Castle Grayskull (trap door mechanism)
• Attak Trak
• Bashasaurus
• Battle Armor He-Man
• Battle Bones
• Blast Attak
• Dragon Walker
• Fright Zone
• Fright Zone (puppet)
• Gyrattacker (unreleased vehicle)
• Horde Trooper
• Hurricane Hordak
• King Hiss
• Land Shark
• Laser Bolt
• Mantenna
• Megalaser
• Mekaneck
• Roboto
• Rokkon & Stonedar
• Rotar & Twistoid
• Spydor
• Sy-Klone
• Thunder Punch He-Man
• Tower Tools/Cliff Climber/Scubattack
• Two Bad

Castle Grayskull trap door patent:

Attak Trak:

Bashasaurus:

Battle Armor He-Man:

Battle Bones:

Blast Attak:

Dragon Walker:

The Fright Zone:

Fright Zone (puppet):

Gyrattacker (unreleased vehicle):

Horde Trooper:

Hurricane Hordak:

King Hiss:

Land Shark:

Laser Bolt:

Mantenna:

Megalaser:

Mekaneck:

Roboto:

Rokkon & Stonedar:

Rotar & Twistoid:

Spydor:

Sy-Klone:

Thunder Punch He-Man:

Tower Tools/Cliff Climber/Scubattack:

Two Bad: