Lets say Kha had eaten all non void creatures that were strong and only voidborn such as Vel or Cho were left would he begin to eat them as well or would he be loyal to the void? Or even further if only the watchers were left and he was the last voidborn would he turn on his creator?
It would make for some interesting lore, but I think khazixs hunger was literally programmed by the watchers, they made voidborn whos goals were to go around runeterra and consume things from that world to learn more about it and abuse whatever it had.
Khazix is literally a self building biological machine in that regard, he is there to consume and adapt, basically taking things that work in an ecosystem and abusing it in order to improve.
Something would have to tick for khazix to turn on and eat other voidborn since there isn't really a point in doing so considering all void creatures are made up of resources / are lower adaptations of what you would find in runeterra, hes already ontop of the chain and has access to everything other voidborn have just by going to the watchers and asking, and khazix already shares similar traits to other voidborn champions, like cho`s e spikes.
That and most traits that he would get from other voidborn would be disastrous for khazix, hes starting to form as a finished creatures that resembles most successful realworld predators, fast and dangerous, if he was to gain reksais or chos armored shells and lose his light carapace, he wouldn't be able to move and jump as easily and would be more of a sitting duck.
Kogs corrosive spittle might be easy for him to utilize and create, but then again, kogs body isn't growing/adapting as far as we know, he is just going around and eating while on his journey to malzahar, which means kog is using a lot of his energy and materials to make whatever that corrosive stuff is.
The watchers and vel koz might make more viable targets for khazix since they share unique / magical traits which might not require much physical downsides/drawbacks, if its even possible for him to gain those by eating them.
