It's one of those times when such a general question is loaded with information that is not general at all. "Time Lords regenerate when we're dying. Change every single cell-" –sounds like you're rattling off a grocery list, how many times was it explained to you in your youth to make it so tedious now?– "-so that it's the same person, just a brand new body. However, what you look like at the end of the process is completely beyond your control."

And that was the interesting part, really, how –you came out this time with this charming, child-like face, looking so darling and easy to trust– you could end up older or younger than the last body you occupied. New face, new voice, slightly altered personality quirks. "I regenerated less than a year ago."