Blue Lanterns (from DC Comics) use and are powered by Hope. and who better than Madoka (from Puelle Magi Madoka Magica) to wield such a ring? i mean she literally (Spoiler) gives up her human form and Becomes the Abstract Concept of HOPE. holy shit, again who else is better to hold the blue lantern ring in all of anime? Shoujo jesus right here. love you girl. may this ring serve you well.