Just Joking

A very long time ago, Earth was in danger. Huge danger.
It needed a way to defend itself, but the condition of the Earth, worn and old, and very small amounts of natural resources left, little to no weapons could be made. Earth seemed to have one thing in abundance though, people.
Some countries taking volunteers; others held a lottery.
Every ethnicity, race, and culture had been gathered. 'Genetic Warfare!' Someone, their name long forgotten, proposed.
As in every war, technological advances skyrocketed.
With very few casualties, Earth had done it. Every country rejoiced. Bracing themselves for the war to begin, they realized the flaw in their plan.
All of the patients had been teenagers. Not wanting to take adults, because of spouses and children, and not wanting to take children from families, they'd used able-bodied teenagers.
Ages 11-18, they had taken mostly orphans or foster care patients.
Unfortunately, teenagers aren't very cooperative.
With their superpower-like abilities, they ran. Taking space shuttles, satellites, rockets, anything, they left.
Using a combination of abilities and engendering, the superpowered teens found new homes, one by one. Groups with the same range of abilities left the whole in exchange for other planets.
The final, remainder of the group settled on a single planet. Naming it Consonance for the many peoples that lived there, and the mostly sound based abilities, they lived 'happily ever after'.
Until the discovery of the Shifters.