A Luminar is a firey alien creature from one of the moons of the planet Sleegab Five. It is seven feet tall with a bulbous humanoid body, two short legs, two short arms with sausage-like fingers at the end, and a wide smile that crackles with electricity. Its skin is able to emanate heat and it is capable of incinerating anything it touches, but when it makes contact with water, the fire is put out and it just has regular flesh. Visser Three morphs this creature in Book #36: The Mutation.