Together with Latias, Latios accompanied and supported Emerald in his quest at the Battle Frontier. It helped Spenser communicate with the Dex Holders with its shared vision ability with Latias. After Guile Hideout was defeated, it returned to the Southern Island with Latias since Emerald finally found companions who would care for him. Later, it teamed up with the Hoenn Dex Holders again when an incoming asteroid was on course to collide with the planet, and Mega Evolved, which gave it the ability to Soar.
