Originally a man with the demeanor of an eccentric, light-hearted buffoon, the Seventh Doctor's jolly persona darkened into that of a mysterious, cunning manipulator to properly combat the return of Fenric. Though he delighted in humorous reverie, it was only the surface layer of his true nature. Beneath, he was a Machiavellian genius of frightful calibre who tactfully used his mind to control nearly all situations into reaching his personal favoured outcome. Despite this, he could also show profound warmth and affection to his companions, and built a strong bond with many of them.

Initially, the Seventh Doctor travelled with Melanie Bush, his predecessor's final companion. After several adventures with Mel, she left to travel with Sabalom Glitz. The Time Lord then began adventuring with Ace, a troubled teenager from the 1980s. The Doctor did his best to help heal Ace's psychological wounds by helping her overcome or come to terms with her past misdeeds and fears. Though he initially planned to take Ace home, they ultimately travelled together for several years.

After many years in this incarnation, the Seventh Doctor regenerated in San Francisco on 31 December 1999, following gunshot wounds and Dr Grace Holloway's subsequent exploratory surgery with a camera accidently clogging a vein. Anaesthetic also nearly prevented him from regenerating, and left his next incarnation with near-total amnesia.

Biography from the TARDIS Data Core article, licensed under CC-BY-SA

Copanions:

Melanie Bush, Ace