Doctor Who, is a timetravling, 2 hearted, human. He is a Timelord.Timelord- A person from theplanet Gallafry.There are 12 Doctors and tecnley there are about 15 or 14. David Tennet had about two regennerations. David Tennet is the 10th Doctor and in his 3 seasons he has had a total of 3 regenerations. Doctor Who season 7 Matt Smith Doctor Who vids.