The Tenth Doctor (David Tennant)

Unlike his immediate predecessor, who was plagued by melancholy due to his actions during the Last Great Time War, the Tenth Doctor, played by David Tennant,¬†possessed an outgoing, lively and genial demeanor that hid his “survivor’s guilt”. For most of his incarnation, the Doctor was able to successfully project a convivial and even frivolous front. However, when he had to engage in conflict, the Tenth Doctor’s energies would shift toward heroism 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 traveled mainly with three companions: Rose Tyler who had been with him earlier, Martha Jones and Donna Noble. Each relationship was shaped, to one degree or another, by romance; He seemed to genuinely love Rose as the person who helped heal some of the scars of the Time War, he was completely oblivious to Martha’s obvious affections toward him, and he insisted upon a platonic relationship with Donna. After he was compelled to wipe Donna’s memory completely, he entered a period in which he shunned long-term companions altogether, but made a few exceptions when he felt justified.

When traveling without companions, the weight of being the last Time Lord became much more pronounced. If prodded too much, he would erupt in an almost righteous sense of fury. Indeed, the Tenth Doctor was described by the Moment as “the man who regrets”. The fact that he was instantly able to recall the number of Gallifreyan children that he believed had been killed during the war indicated just how keenly he actually felt those horrendous memories.

He met his end after he absorbed a huge quantity of nuclear¬†radiation whilst saving the life of Donna Noble’s grandfather, Wilfred Mott. He also used up one regeneration after being hit by a Dalek ray but channeled the energy into his spare hand.