(PROSE: The Christmas Inversion) When Ace was sent into the Seventh Doctor's mind, she discovered a room with thirteen cubicles, seven of them empty, while the other six contained shadowy white figures, representing the Doctor's future incarnations.
(PROSE: Timewyrm: Revelation) Travelling through the caves of the Death Zone to save Borusa from the Dark Tower, the War Doctor and Cinder found various cave paintings that depicted the Doctor throughout his life; the War Doctor noticed one of "a lanky man in a blue suit", and recognised it as one of his future regenerations.
(PROSE: Engines of War) When the Ninth Doctor answered a call from Mickey Smith in San Francisco, he was told that the phone call was meant for "the other one", and quickly deduced that Mickey was talking about his next incarnation.
(COMIC: The Transformed) The Ninth Doctor absorbed the Time Vortex from his companion, Rose Tyler, to save her life when she became the Bad Wolf entity and transferred it back into the Heart of the TARDIS.
However, when he had to engage in conflict, the Tenth Doctor's energies would shift to reveal a fiercely protective man who resolutely guarded what he held dear, and who could be viciously unforgiving to the forces that dared menace them.
He was unique in that he was the only incarnation of the Doctor who chose to waste and abort one of his regenerations, leaving him with just one left, after being hit by a Dalek ray, channelling the energy into his spare hand without changing his appearance, something his successor would attribute to "vanity issues" the Tenth Doctor had developed from enjoying being the person he was in his current incarnation.
(TV: Children in Need Special) Crash-landing the TARDIS on the Powell Estate on Christmas Eve 2006, the Doctor fell into a coma after wishing Jackie Tyler and Mickey Smith a Merry Christmas.
I visited the home of a painter not long ago, and she has her own work everywhere: in the hall, on the stairs, piled up in the sitting room. Many of his relationships with companions were shaped, to one degree or another, by romance; he seemed to genuinely love Rose Tyler as the person who helped heal some of the scars of the Time War, was completely oblivious to Martha Jones' obvious affections toward him, and insisted upon a platonic relationship with Donna Noble.The departure of each of these companions marked periods in his life where he would abstain from having companions at all, and on one occasion he even stopped having adventures or leaving the TARDIS, with little more than a cat for company. He’s very 70s in the way he eats, too: he can get through a box of Maldon sea salt and a brick of butter in two days. ’‘It was in reference to your diary entry yesterday. ‘Oh, I saw my daughter, she’s over from Sweden with her mum. He sent me a text to say he’d arrived safely, beginning it with, ‘Hello there, Mrs Scrace…’‘Why on earth are you calling me that?Indeed, the Tenth Doctor was described by the Moment as "the man who regrets".