Possession

Possession is the concept of when a being takes over the body and mind of another. This is very common in the known Whoniverse.

Examples of Possession

 * The Beast possessing Toby Zed, giving him the ability to breathe fire and survive in areas without oxygen. (DW: The Impossible Planet/ The Satan Pit)
 * The Torajii sun possessing Korwin McDonnell and Dev Ashton, giving them the ability to vaporize a being by looking at them. (DW: 42)
 * The Isolus possessing Chloe Webber, giving her the ability to make drawings come to life and living things become drawings. (DW: Fear Her)
 * Cassandra O'Brien possessing Rose Tyler, when she decided she needed a new human body. (DW: New Earth)