Seif-al-Din

His name means the Sword of the Faith, and he is the most powerful Caliphate superhuman. A ten-foot giant with the shadows of enormous black angel wings rising from his back, skin glowing in undulating spots of bright and dim light, swinging a great burning sword, Seif-al-Din is stronger than an A Class Atlas-Type. He has died twice so far, the second time, at Whittier Base where - after he killed both Ajax and Atlas - Astra hit him in a kinetic strike using herself as the missile and then killed him with his own sword.