Bingowings said:
These were obviously meant to be previous lives of the Time Lord called the Doctor.
And yet Susan's grandfather calls himself the First Doctor and the cricket player calls himself the Fifth.
This chap is the same Time Lord but calls himself the Valeyard.
It's a very clever retcon because it puts back some of the lost mystery of the character.
Grace never really traveled with the Doctor, if you include her you have to include Jackie Tyler as a companion.
Could some of those have been Morbius's past incarnations though? Haven't seen that story in ages.