Human (Attack of the Graske)

A young, unidentified human (NOTVALID: Companions and Allies) aided the Tenth Doctor in defeating a Graske. (NOTVALID: Attack of the Graske)

Biography
After leaving Rose Tyler in 1979, the Tenth Doctor picked up this human in his TARDIS, and then he had the individual discern a Graske who was posing as a mother. The Graske, once identified, fled.

The human piloted the TARDIS upon the Doctor's instruction, tracking the Graske down to London, 1883. After the human located the Graske, it fled once again, this time to its home planet, Griffoth.

On Griffoth, after solving a number of puzzles, the human and the Doctor made their way to a chamber filled with the humans that the Graske had snatched in order to resume their place. The human is then posed with a choice, either to free the captives or to leave them. The individual then chose either one of them, with the Doctor commenting upon the decision. The Doctor returned the human home, with his opinion on the human fluctuating, and he departed, wishing the human farewell. (NOTVALID: Attack of the Graske, NOTVALID: Companions and Allies)

Behind the scenes
The "human", the main character of Attack of the Graske, is a blank slate of sorts to accommodate the player to fulfill the role of the character, like an avatar. On this Wiki, the player is not a valid source for obvious reasons, thus meaning that what one random individual's personality or appearance is irrelevant. Moreover, Companions and Allies treats the unidentified human as a proper character, devoting an entire page to this human.