Kirrun and Aria I made up on the spot.
I told Noble already that Xavier is a character I've been slowly improving for at least 3-4 years now, and am very attached to, and actually has a counterpart in my 'original' universe.
Killing him off would open up some interesting plotlines that would let me bring in his sister, though.
...Actually screw it I'm probably bringing in his sister whatever happens because I like her too.