Do pathospires have Emphaty?
—spoilers for HFSH ahead—
Because when Jik-Jak calls Nova a 2nd time in the game and Nova mentions Miss B. Being depressed, both of them seem to not care. So, is this a trait Nova got from Jik-Jak (making him be a possible psychopath?) or is it a normal thing for pathospires?
It's not that pathospires lack empathy (they can certainly feel it for other pathospires), but rather that pathospires generally don't view non-pathospires as people.
To pathospires, non-pathospires are a food source and they treat them as such. Even if a pathospire is being friendly or kind to a non-pathospire, it's usually with the intent to eat their heart later on. Even if a pathospire feels fondly to a non-pathospire, they probably view them more as a pet than a person.
The reason Nova likes Twyla so much for example is because they stopped seeing her as food and started seeing her as a person!