1) Superman foe aka John Corben 
In 2009, Metallo was ranked as IGN`s 52nd Greatest Comic Book Villain of All Time. ==Fictional character biography== ===The Golden Age Metalo=== The Golden Age Superman battled an unnamed scientist calling himself `Metalo` who wore a powered suit of steel armor in a story titled `Man of Steel Versus Man of Metal` by John Sikela and Jerry Sieg...