It's a cool idea, the cat-people evolving while Lister was in stasis and they think Lister is God. But after the idea was laid out in Waiting For God, nothing else really happened. And we've got this bloke with fangs and colourful outfits who says "ooww". When I started watching Red Dwarf as a kid, I remember being under the impression Cat was a vampire at first. We don't really get anything from Cat, character-wise. Lister and Rimmer both bring all sorts of issues from their pasts, their familial and romantic relationships and things like that. Cat is a blank slate. In XI series, we've had two Cat episodes. Because there's not a lot there to work with. The first is the origin of the cat-people, then ten series later we get an episode where he get impregnanted by a Polymorph. We know he was born on Red Dwarf to the Cripple and the Idiot (we don't know which was which). We don't know if he had siblings, or cousins, or any other relations. The crew have never asked, at least not on-camera. We know he is a virgin, but we don't really know why. Was he a virgin for the normal reasons people are virgins in normal society? Or is it because he never actually met a cat woman? It's convenient that his libido so easily transfers to human women. Were the Cripple and the Idiot and the Priest the only three left behind? And the Cripple and the Idiot had Cat as their only child, but then died before having any more, thus leaving him to be raised by the priest? I think he mentioned being an orphan in Samsara. Cats are associated with being intelligent, not stupid. But this Cat is stupid because his parents were stupid. Well, one of them was stupid. Being a cripple doesn't mean you're stupid. Actually, neither does having one stupid parent. Why's he so stupid. How come in XI series we've never seen or heard anything about the cat-people? Surely they'd have made an impression on all the GELFs and robots knocking around. There's a whole species out there somewhere, but it's like they were only invented conceptually so that we could have Cat as a Red Dwarf crew-member, and we're not supposed to factor them in plot-wise. Unless there's an episode where a Polymorph disguises itself as one, then we're supposed to remember that they're ostensibly still out there.