Well, I'm going to have to look into that 'hat 'o shame' too, oops.
Dead asteroid - research station
Dynamic duo
Head researcher - military specialist. Posted undercover, station actually has a major role to play in saving a planet.
Flunky researcher - washed up wonderkid. Botched a major research opportunity hen trying to save a local girl. They now live together on the asteroid. Damsel in distress is a cook, researcher is second in comand amd she is trying to rebuild he credibility.
Caretaker - Old man, no family of his own. Parents dead. Signed up for life at this station. Hates people, loves his plants. Keeps a lot of plants to ease oxygen recycling.
Sabatour - working at the station as the head researcher's aid. Trusted childhood friend, high security clearance, unassuming organizer. Very quietly disrupting efforts to redirect this asteroid.