Eternia

Eternia is a planet located at the center of the universe, a world of both high technology and fantastical magic. It is the home of Castle Grayskull, a source of unimaginable magical power.

The planet is protected by a band of powerful heroic "Masters" against the onslaught of villainous forces who seek conquest and destruction.

Fiction

The AllSpark Almanac

Eternia was a neutral organic planet. The AllSpark Almanac II

Masters of the Universe x Transformers

When the Ark left Cybertron, a capsule containing the planet's history was launched into deep space, eventually landing on Eternia. There it was found by Man-At-Arms, who began to data-mine it for Cybertron's technological advancements. Having also been drawn to the capsule, Skeletor, seeking to conquer the planet, managed to access its data to fashion himself new armor in the image of Megatron. After reuniting with his own allies and discovering energon, Man-At-Arms fashioned an armor inspired by Bumblebee. By the Energon of Grayskull

Skeletor sought to convert Castle Grayskull into energon, but was met and defeated by He-Man in Optimus Prime-styled armor. Roll Out!

Notes

• Eternia is the setting of the Masters of the Universe franchise.