Batman / Superman: World's Finest #15

The rise of Ultra-Morpho! Years ago, Professor Anthony Ivo built Amazo, a killer android who could duplicate the powers of the Justice League. But now an even deadlier android stalks the DC Universe: Ultra-Morpho! Able to transform into any element, including Kryptonite, Ultra-Morpho can kill Batman, Superman, Robin, and Metamorpho in one fell swoop! But who created him? Who does he work for? And what has he done to Will Magnus, inventor of the Metal Men?!

Characters: Ace Morgan, Amazo, Batman, Bug-Eyed Bandit, Chemo, Dick Grayson, Doctor Cyber, Donna Troy, Elasti-Girl, Garth, Gold, Iron, Keeg Bovo, Lead, Mekanique, Mercury, Metamorpho, Negative Man, Platinum, Prof Haley, Professor Ivo, Red Ryan, Red Tornado, Robotman (Cliff Steele), Rocky Davis, Roy Harper, Supergirl (Kara Zor-El), Superman, Tin, Toyman (Schott), Ultivac, Wally West, Will Magnus