Angel (Doctor Who)

Angels are a sapient, shapeshifting species of enigmatic creatures which inhabit the gas giant Lucifer and are capable of phenomenal feats, including control over their own material composition and over space-time itself.

Biology
Little is known about the Angels and the extent of their abilities. It's not known whether they are natural shapeshifters or acquired this ability after developing the technology to alter morphic fields. They can change not only their own appearance but their physical composition, and have at least some control over spacetime, although not over black holes.

Angels spend their days deep inside the atmosphere of the gas giant Lucifer, dancing over the seas of zelanite. After death, they become a high-mass element that sinks into the core of the planet.

Culture and society
Angels are an enigmatic species which has existed for over 500 million years. It is believed that they consider their own world to be Heaven and the rest of the universe to be Hell. Black holes, being beyond their control, are worshiped by the Angels, who believe them to be the abode of their God.

Appearances

 * Doctor Who New Adventures novels, Lucifer Rising, by Andy Lane and Jim Mortimore (1993)