User:SOTO/Forum Archive/The Panopticon/@comment-4028641-20151008023030/@comment-6032121-20191107182418

I meant less in terms of physical resemblance, and more in terms of the fact that he has different make-up and a different costume. The voice thing, and Ainley not even being asked, are also fairly strong arguments against.

I think if anything they just wanted "generic Master", not expecting viewers twenty years on to be scratching their heads as to precisely which Master that was.

All in all, if you want to imagine it's Ainley in your headcanon, fine, but it's way too muddled both in terms of what's on-screen, and in terms of what the authorial intent may have been, for such an opinion to be anything more than speculation.