Jenny (Doctor Who)

Jenny was the daughter of the Tenth Doctor, artificially created from his DNA when it was forcibly sampled with a progenation machine. During a short war on the planet Messaline between humansand Hath, both sides used progenation machines to instantly create mentally programmed adults from the DNA of single parents. When the Tenth Doctor, Donna Noble, and Martha Jones arrived on Messaline, Jenny was made from a skinsample taken from the Doctor, against his will.

The then nameless Jenny pushed a button which triggered an explosion. The tunnel collapsed, cutting the group off from the Hath and Martha. Shortly after, Jenny was named by the Doctor's companion Donna Noble from his description of her as a "generated anomaly". Jenny's commander, Cobb, had the Doctor, Donna, and Jenny locked up. Donna proved to the Doctor that Jenny was indeed his daughter by listening to Jenny's heartbeat. Like the Doctor, she had two hearts. However, the Doctor insisted that she was nothing more than an "echo", and that a "real" Time Lord was "so much more".

Jenny helped the others escape by kissing Cline and stealing his pistol. The Doctor found his daughter very capable, though she was inclined towards violence. He later convinced her not to kill Cobb. As the three of them made their way towards the Source, which Cobb and the Hath both sought, Jenny spoke with the Doctor about the possibility of travelling with him, and he told her that he would never leave her. The Doctor told the respective parties to end the war, whereupon General Cobb aimed his gun and shot at him. Jenny jumped in the way of the bullet. She was shot through one of her hearts, and died, but did not regenerate.

While lying in state, Jenny's body was revived. With her father having left the planet and believing her to be dead, she stole a shuttlecraft and left Messaline. When asked where she was going, she restated Donna's earlier description of the Doctor's life. "Oh, I've got the whole universe: planets to save, civilisations to rescue, creatures to defeat — and an awful lot of running to do." She then set off to explore the universe.