Fan Casting Superman 4 The Death of Superman

When Lex Luthor returns to Metropolis, he uses Zod's body to create a monster with a Kryptonite core and named it Doomsday. Doomsday and Superman would later fight but because of the Kryptonite core he would kill Superman. Now its up to Supergirl to save Metropolis alongside Starfire. The movie ends with Doomsday being defeated and Lex falling into a waterfall leading to Gotham and Supergirl suspecting that he is dead.