User:SOTO/Forum Archive/The Panopticon/@comment-4028641-20151008023030/@comment-1783865-20191105195459

One talks about his mind, the other talks about his appearance. And as I also covered, this scenario is similar to the Saxon Master transformation. He is 3 different versions of himself in all 3 appearances, but he is still the same single incarnation. One had him insane, one had him total mental psychopath and one had him calm and collected evil genius mind.

Delgado's Master could easily have gone through the same transformation, with the blast out the TARDIS and picked up by Goth (no regeneration confirmed stated) turning him a mentally unstable wreck of a psycho while the other one (showing a regeneration happening for him) not stating when it takes place and how long time could have gone.