when speaking to most people, Felix has a silky-smooth voice. they're eloquent. they're charming. they're a society delight.
when speaking to people it's close to, though, its voice is much more throaty, raspy. outwardly emotionless. it's blunt; it wastes no time on flattery or small talk, and gets right to the point. it knows you respect it, and it respects you in turn.
in general: the closer you are with Felix, the less it bothers hiding that it isn't human.
Compare:
"Like wide-eyed children," Felix says. "Delightful! But terribly naive to the dangers behind the glass. Agreements carry tremendous weight in Parabola, you see, and I fear most of them don't understand this. They're too quick to agree to terms that they don't understand. They don't think about the consequences of being unable to honor their end of the deal... or even of being able to. There are always, always consequences.
They stir their glass. "I do my best to teach them, of course. But there will always be some who can only learn the hard way."
...and contrast:
"Foolish morsels, most of them," Felix says dismissively. "Too eager and delicious for their own good. No understanding of the weight of an agreement, and too quick to promise more than they can honor." A sigh. "They will understand better when I am done with them. Or it will be on their own heads."
A pause. "But I do enjoy their company," it admits.
(both are it talking about bohemians)
