[ ... That's actually a pretty interesting ability to have, he thinks. ]

That is quite a powerful ability.

[ So far that's two people, however... ]

In the beginning when Miata was speaking with a few of the others, she did mention 'herself and the one running this show', seemingly to imply that there were at least two people altogether. Although, I would not be surprised if that were not exactly the truth, and there was another at the least.

[ That was the perfect time to listen into people's conversations and no one can fault him for it. ]