A good example of this -- Verity give me strength -- is Doctor Who.
As a character, through all his varied incarnations, the Doctor is clearly ENTP. Yet the first Doctor, William Hartnell, is a real oddball.
Hartnell's Doctor starts off as the most cold, bitter, callous INTJ you could imagine. He's even worse in the unaired pilot episode. Yet as the show goes on, his traveling companions -- particularly Barbara and Steven -- slowly humanize him. He grows healthier, more responsible, and more affectionate. By the end, he has shifted more obviously into ENTP territory, where he has remained ever since.
I think McCoy may be showing a bit of the shadow again (which makes sense, as his portrayal was a deliberate cross between Hartnell and Troughton). And Eccleston has his flashes. Still, it's pretty clear where they sit.