Doctor Who: 20 Things You Didn't Know About The Ninth Doctor
3. He Unknowingly Saved Donna During His Very First Episode
Donna Noble didn't become a regular companion until 2008's Series 4, although she did have an earlier adventure with the Tenth Doctor in the 2006 Christmas special.
But unbeknownst to her - and unbeknownst to the Doctor - their connection goes back even further than this... sort of.
During the episode Rose, an army of Autons wreaks havoc throughout downtown London, terrifying shoppers and even murdering good ol' Clive.
As revealed in Russell T Davies' novelisation of the episode, Donna can hear the commotion caused by this Auton attack from the safety of her Chiswick house, with the book mentioning that she's "annoyed" by the noise. However, she then nods off, and sleeps through the whole thing. Classic Donna.
If the Ninth Doctor hadn't stopped the Auton threat, then they probably would've reached Donna quite quickly, given her proximity to the incident. So you could say that he saved his future companion in his very first episode.