Scorchie

The Scorchies were a species that had no form of their own but took the form of puppets that arrived on planets to destroy or enslave their populations.

Biology
The Scorchies had no physical form after their planet was destroyed, so they took the form of puppets to attract viewers to their show.

History
The Scorchies was a given name to the species. They originated from a planet that had only recently discovered television by Professor Baffle. A species came along and destroyed the planet through television. Professor Baffle then tried to save his people, but they ended up as formless, floating between planets. Taking their revenge on the universe, they burned out planets by hypnotising the population. They earned their name because of this. (AUDIO: The Scorchies)

At some point, two of the scorchies called Mister and Missus developed humanoid body by 'borrowing' them. This enabled them to live like ordinary humans, but they soon realised they need a lot of mental energy to maintain and utilise the body. (AUDIO: Encore of the Scorchies)

In December 1894, a group of Scorchies arrived on Earth despite the television not having been invented yet. They booked appearances at Henry Gordon Jago's New Regency Theatre. They tried to hypnotise hundreds of audiences in New Regency Theatre to use them as source of mental energy for Mister and Missus. But when Jago and Litefoot figured out their plan, Ellie Higson burned the scorchies with fire. (AUDIO: The Wax Princess, Encore of the Scorchies)

The Third Doctor and Jo Grant later encountered another group of Scorchies on Earth, eventually defeating them and sending their consciousnesses back into space. (AUDIO: The Scorchies)