Krull

Krull is a planet.

Fiction

The AllSpark Almanac

Thrull was part of the Decepticon Empire's domain until its destruction. The Complete AllSpark Almanac

Games

Transformers Legends

Following the destruction of Unicron, Galvatron ended up on the planet Krull. Cyclonus journeyed there to find his lost leader, and after he succeeded, Galvatron destroyed the planet. Five Faces of Darkness: Part 1

Notes

• Maybe you were looking for Thrull. Or the 1983 fantasy film.