Citadel of Light

The Citadel of Light is a building from the IDW portion of the Generation 1 continuity family.

The Citadel of Light is a location that once existed on Cybertron that is home to Onyx Prime.

Fiction

IDW Generation 1 continuity

In ancient times, Cybertron was led by the Thirteen who each led one of the Thirteen Tribes on the planet. These tribes were engaged in warfare with one another with the Citadel of Light being the home of Onyx Prime along with her beastial Transformers. When the Primes disappeared, Onyx Prime was the last of their number to vanish with her former Citadel being under siege by forces that included Nova Major. After breaking into the Citadel of Light, Nova Major along with Alpha Trion and Galvatron sought to forge a new world now that the time of the Primes had ended. The Crucible