//Oh, the Master, EASILY. The Doctor has never been self-aware in any face, which has effected consequences ranging from being blunt, impatient, and rude toward a Companion who’s scared or upset, to the creation of a number of monsters throughout the universe, including the Master themself.
The Master is aware of this, and is contrariwise a hypervigilant, fanatically meticulous person. Whether in love or loathing, the Master has studied the Doctor like a most beloved academic subject, and simultaneously, like a soul mate. Simm Master has a penchant for rubbing salt directly into the deepest wounds, as well, and that’s not just because he’s spiteful and nasty (which he is), but also because he knows the Doctor THAT well. It’s a double whammy because the Master studies EVERYTHING thoroughly (except maybe the potential heroism of humans, whom the Master constantly underestimates), and also because the Doctor is the Master’s favorite subject in all the universe.
He would know ages before the Doctor. Ages.






