old age
If you are referring to the ninth Doctor in Doctor Who, then the answer is Christopher Eccleston.
Ninth Doctor was created in 2005.
Christopher Eccleston
No they do not regenrate legs.
the doctor regenerated in the parting of the ways
Doctor Who The Doctors Revisited - 2013 The Ninth Doctor 1-9 is rated/received certificates of: UK:PG
th soil was able to regenrate
The Ninth Doctor's catchphrase was "Fantastic!" He often used this word to express excitement or awe at various situations.
Looking into the time vortex caused the Ninth Doctor to absorb the time vortex energy in order to save Rose Tyler. This act resulted in the regeneration of the Ninth Doctor into the Tenth Doctor.
The 9th and 10th Doctor used the same screwdriver.
The Ninth Doctor had the scripts of his episodes released a few years ago in a book called Doctor Who: The Shooting Scripts