Captain (Wild Blue Yonder)
A captain was a member of an equine-looking species and the captain of a spaceship at the Edge of Creation.
Falling through a wormhole, her ship became lost at the edge of the known universe. The captain discovered the not-things, which was a discovery so horrifying that it led her to install a mechanism in her incredibly large spaceship that would slowly reconfigure it into a bomb, and had a robot installed to an incredibly slow walk towards the activation button as well as a very slow countdown to self-destruction. This would ensure that the monsters she had found would not understand what she had done. She then opened an air-lock on her spaceship and jumped out into the nothingness, killing herself.
Three years on, when the Fourteenth Doctor and Donna Noble arrived, her corpse had been caught in the gravity field around the spaceship, causing her spacesuit to collide with the ship and create a banging noise. Her corpse was incinerated when the spaceship finally exploded, taking the not-things with her. (TV: Wild Blue Yonder [+]Loading...["Wild Blue Yonder (TV story)"])