Diana, the Serpent's Sin of Envy among the Seven Deadly Sins, wields immense physical strength and the massive War Hammer Gideon. At the Sky Temple, she demonstrated her combat prowess by crushing the entity Snake with Gideon and smashing a clone of Galla with her fist. Her crucial role came during the battle against the demon Galla. There, Diana combined her Creation ability with King's Spirit Spear Chastiefol to execute their coordinated "Cross Shooting" technique, striking down the demon. This action formed part of the Sins' larger effort to defend the Sky Temple's inhabitants from the demonic threat of the Six Knights of Black and the unleashed Indura.