Doctor Who

If you don't already know about the TV series, then this is just for you.
You see, there is an alien creature race called "The Time Lords."
A Time Lord can regenerate into 13 forms, but recently a Time Lord  called "The Doctor"
Was given 13 more regenerations. There are 8 classic doctors, and 4 new doctors.
Here is a list of all the doctors:
The First Doctor; William Hartnell
The Second Doctor; Patrick Troughton
The Third Doctor; Jon Pertwee
The Fourth Doctor; Tom Baker
The Fifth Doctor; Peter Davidson (Peter Moffat)
The Sixth Doctor; Colin Baker
The Seventh Doctor; Sylvester McCoy
The Eighth Doctor; Paul McGann
The Ninth Doctor; Christopher Eccleston
The Tenth Doctor; David Tennant
The Eleventh Doctor; Matt Smith
The Twelfth Doctor; Peter Capaldi