@StephensTrek1 that makes sense. My original thought about why 14 looks like 10 is because 13 had technically de-generated when The Master was thrown out of her body. If she was in a de-generation then it would make sense that she could go back into a familiar body. And… who doesn’t love David Tennant? If we want to be complete asses, we can say that technically Tennant is 15 and Gatwa is 16. But, I’ll let that go.