If we’re talking end of the world chaos, I think physical ability and bravery needs to be taken into account. Also ability to actually have sex and sperm function.

Riley is out because he can’t handle heat and needs medicine that kills sperm.

Gino is a wimp and not a brave man, although he’s an engineer so he’s second place for me.

Nicola is last. He has zero redeeming qualities.

I’m going to have to go with Christian. He’s not a big guy, but I think he’s likely athletic enough. He’s also one of the few who could can have sex and sperm that works 🤣 plus, I think he’s braver than Gino.