Mercury

Mercury is one of the original Metal Men, a team of robots created by the brilliant scientist Dr. Will Magnus. Crafted from the element mercury, he possesses a fluid, highly adaptable form that reflects the unique properties of his namesake metal.

Few Silver Age creations have shown the staying power of Mercury, who burst onto the DC scene in 1962's Tales of the Unexpected #70 — courtesy of Jack Schiff and Win Mortimer — and has been a recognizable presence in the publisher's universe ever since. With over six decades of appearances stretching from 1962 all the way to 2025, Mercury is no fleeting curiosity but a genuine enduring figure, most at home in Metal Men while also turning up in ambitious projects like Wednesday Comics and 52. Along the way, Mercury has shared pages with some of DC's most iconic names — The Flash, Superman, Batman, and fellow cast members Gold and Tin among them — which speaks to just how deeply woven into the fabric of the DC universe this character has become. With 96 catalogued appearances and four key issues to the name, Mercury is exactly the kind of Silver Age gem that rewards the dedicated collector who digs a little deeper.