The Demons took part in the Battle of the Distortion World when they openly defied the League. The League sent a fleet into the Distortion World to kill the Demon of the Abyss, and in doing so they angered the other Demons. A massive war broke out which shook the Distortion World to pieces, with the Distortion Demons tearing League ships apart and decimating ground forces. However, thanks to the dedication and bravery of the League, all the Demons were eventually killed during the fighting, with the survivors being vaporised upon the arrival of Giratina. The Demon of the Abyss herself was trapped by the Gods in another Dimension.