The doctor

The doctor is the last of the time lords. Apart from river song, it is unknown if anyone knows his real name. He travels through time and space in his tardis, which is the last tardis. He travels with his companions, who usually come from earth.

Regeneration
If the doctor takes a lot of damage, he can regenerate. Regeneration is when the doctor's cells reguvinate. They heal him of everything, but as a side effect, it also changes the look of his body and face.

Trivia

 * No-one knows his real name.


 * He is the last time lord.


 * His nemisis is the master(Another time lord who is supposedly dead), davros and the daleks.