In experimenting with his newfound abilities, Metallo found he could alternate differing energy frequencies for harnessing and redistributing it from various power sources. Brainiac 13 upgraded Metallo to tap into various light spectra to better utilize his kryptonite-charged abilities. His mechanical body was also upgraded to be able to grow towards monolithic proportions. He is also occasionally portrayed as having a liquid metal-based endoskeleton, possessing the ability to morph parts of his body, specifically his limbs, into different weapons or tools, such as chainsaws, shovels, hammers, etc. While not a genius like Lex Luthor or Brainiac, Corben's time spent with machines has given him a gifted understanding of how they work, enabling him to tinker with their mechanical functions even before gaining his technomorphing capabilities. During the publishing of Salvation Run it is revealed Metallo also boasts a high-calculus cyber-mind with which to run the numbers of possible & probable outcomes as well as success ratios through. In the previous continuity, the Pre-Flashpoint Lex Luthor modified Corben to holster and utilize different forms of kryptonite; boasting mutagenic red-k, inverted blue-k and lastly, artificial depowering gold-k on top of the green he already possessed. He could even power a great many anti-Kryptonian armaments developed by Luthor through it. Other versions Metallo appeared in Superman: Red Son as a project (among many others) invented by Dr. Lex Luthor for the US government to combat Superman, leader of the USSR. The Silver Age Metallo appears in the series Justice. In Art Baltazar's Superman Family Adventures, Jack Corben was an astronaut who became sick after flying through a kryptonite asteroid field. Lex Luthor manipulates him into believing that it was all Superman's fault and that he can help Jack if Jack defeats Superman. Jack gets the upper hand in the fight with his kryptonite, but the Superman family is aided by John Henry Irons into trapping Jack in a lead case. This version is not a cyborg, but instead has a large metallic armor that contains all his kryptonite poisoning. In other media Television Live-action The Roger Corben incarnation of Metallo appears in Superboy, portrayed by Michael Callan. This version is a bungling bank robber who suffers from chest pains. In the episode "Metallo", he tries to rob an armored car despite his condition. Superboy arrives and apprehends the bank robber, but Corben has a heart attack and is taken to a hospital. After