 Hesper or Hesperus is the 'weapon' the wizards need to defeat the Lone Power for Hesper is a piece of the Lone Power that hasn't fallen.Our chief antagonist of the whole series, makes a capture of the wizards and Hesper, but was defeated (partly since it was only one version of it) when Hesper makes her choice and is on position.The One's Champion was once linked to Ronan, but the link was broken when Ronan releases The One's Champion to make a chance for Hesper to make her choice.