Heavily discriminating Avali species via active military intervention with the usage of a weapon known as an "Electro Magnetic Pulse".
Thinking about how the Avali, who have a tech-based society haven't wiped themselves out yet with nuclear weapons or large EMP's.
I would say that you should just make your own, but I have no clue how to mod. Just as long as you don't reuse their original assets, you should be in the clear.