Torajii

"Burn with Me!"

- Torajii in its maddened state

Torajii is a living, sentient star.

Biology
Unlike most stars, Torajii is a sentient being. Like any other star is composed of a variety of gases and chemicals. It can control and manipulate these elements to take over other being from a distance. Once its taken a victim over it can control the body like a puppet. Victims of possession are capable or releasing intense heat from their eyes; enough to vaporize a human body to ashes. Torajii is capable of using the memories of those it has infected to its own advantage and intelligently react to problems

Forcibly removing a piece of Torajii will cause it incredible pain. The Doctor while under possession described the pain to be akin to having ones heart pulled out.

History
Torajii was first encountered as a sentient being when the crew of the SS Pentallian performed an illegal Fusion Scoop; removing gases from the star to power the ship. The pain of the "assault" drove Torajii into a maddened rage where it sought to take vengeance on the ship and reclaim its missing parts.

Gas from the star traveled to the ship and infected several crewmen; transforming them into its agents who would kill the non infected and crash the ship into the sun.

When the Doctor attempted to rescue Martha and another crewman from a pod that had been jettisoned he to was infected.

Thanks to Martha's quick thinking the fuel was jettosend from the ship and Torajii returned to its docile state; releasing the Doctor and pushing the Ship into a safe orbit once it regained its lost parts. Before departing the Doctor informed the surviors to place buoys around the star so no one would harm it again.

Appearances

 * Doctor Who - series 3, ep. 07 - "42"