The Doctor is played by many different actors.
Uses high tech gadgets (e.g. the sonic screwdriver).
Likes to drive fast cars (the 3rd Doctor's Whomobile!)
Therefore, the Doctor = James Bond
*******
The Doctor is half-human on his mother's side.
Has died and come back to life.
Acts as a scientific advisor.
Is good friends with a sexually promiscuous Captain.
Therefore, the Doctor = Spock