Pyramid

The pyramid is a kind of structure in Egypt. There's also a Mexican variety.
Fiction
Super-God Masterforce cartoon
After a battle with the Autobot Pretenders on Earth, Blood was imprisoned in a sarcophagus in an Egyptian pyramid. He was freed hundreds of years later by Devil Z. Terror! The Decepticons' Manhunt
Super-God Masterforce comic
Grand implies that the legend of giants in the ancient time and huge-stone cultures such as the Pyramids in Egypt are related to the Pretenders. Great Turn-Around! Autobots
Robots in Disguise cartoon
The Black Pyramid was an undersea Matrix Chamber off the coast of Japan which the Predacons attempted to use. The Hunt for Black Pyramid One of the O-Parts was hidden under the capstone of a pyramid. A Friendly Contest The Orb of Sigma was also hidden in another, underground pyramid. Peril from the Past
Unicron Trilogy
Energon cartoon
Jungle City was built in the vicinity of the Mayan pyramids in Central America. This area was special to Kicker and Misha, as it was where they first met.
The pyramids contained a large amount of energon, and so was inevitably attacked by the Decepticons. The Autobots and humans made a valiant effort to save them, but ultimately, Optimus Prime was forced to order their destruction Crisis in Jungle City.
Alexis later had them rebuilt at a nearby location Team Optimus Prime.
Revenge of the Fallen
The Great Pyramid of Giza is in fact a solar harvester that was covered by humanity in stone. Devastator destroys the covering stone of the top to reveal the harvester for The Fallen. Revenge of the Fallen


