In the new world, we have found Neanderthals that appear to have travelled there tens of thousands years ago. While similar to us, their biology and culture favour individualism & creativity compared to our uniformisation & optimisation.
In the new world, we have found an elf-like people. Their superior lifespan, strenght and memory make them scornful of us and want to subjugate us. Yet, we can use their slow ability to change and fascination with the new against them to win this war.