The Doctor is a Time Lord: a 900 year old alien with 2 hearts, part of a gifted civilization who mastered time travel. The Doctor saves planets for a living—more of a hobby actually, and the Doctor's very, very good at it.
2021
2022
1997
1995
2002
2001
1965
2023
1991
2005
1992
2006
2019
2007
1966