The Metal Men are fictional characters, a team of robot superheroes created by writer Robert Kanigher, pencilled by Ross Andru and inked by Mike Esposito for DC Comics in 1962. They made their first appearance in Showcase #37-40 as part of a four-issue series created as a last-minute filler feature. They proved unexpectedly popular and the characters were revived for more stories under their own title and had subsequent appearances in various series in the DC Universe.
The Metal Men were presented as advanced artificially intelligent robots, created by scientist Dr. William "Will" Magnus. "Doc" Magnus (as his creations affectionately call him) states that their intelligence and personalities are generated by devices called "responsometers". They mirror characteristics commonly associated with their namesake metals, both in personality and in substance. According to some accounts the Metal Men are actually composed of various metals, while in others, they are made of a chemical substance that can duplicate the properties of a specific metal as determined by the programming of their individual "responsometers".
The team consisted of their field leader Gold, strong man Iron, slow-witted and loyal Lead, self-doubting and insecure Tin, hot-headed Mercury (the only metal liquid at room temperature), and Platinum, or Tina (now called Platina), who thought she was a real woman rather than a robot and was, in a Pygmalion twist, in love with creator Doc Magnus. Tin later kit-built himself a girlfriend whom he called "Beautiful" but was "Nameless" to the others. She shared some adventures with them.
While all of the Metal Men were basically shapeshifters, each of them had abilities that reflected the traits of their namesake metal; Gold could stretch his body almost infinitely, Iron was super strong, Lead could block harmful radiation and the like and usually morphed into thick shields, Mercury could melt and reform himself through small spaces, or over vast distances, and Platinum could stretch and flatten herself, usually into coils of thin strands. while Tin seemed to prefer acting as a "can" or container, his other efforts usually failing due to his weak strength.