DC Comics vs Gurren Lagann
Connection:
Both wield accessories-like weapons that use willpower to do universal-multiversal feats (Green Lantern Ring to Kyle and Drill to Simon)
Both of their willpowers stems from an outside force (The Emotional Spectrum and Spiral Energy respectively)
Both are cosmic successors to impulsive yet bold heroes (Ganthet to Kyle and Kamina to Simon)
Both are also in a relationship with a villain's daughter (Soranik Natu to Kyle and Nia Teppelin to Simon)
