The Four Ether Children are a group of kids who tried resurrecting Ventus' mother through willpower and the Omni-Gate. Surprisingly the willpower all four of them possessed was too tremendous and they all had gained partial powers of the Divine Dragon, Kalos, they soon became the four most powerful Dragons to ever exist, this goes to show on how powerful Kalos is. Although they weren't able to bring back Ventus' mother, they became one of the most influential forces in the world one even becoming an Emperor.