Disambiguation: from The Metal Men
First published in: 1962
Robotic superhero created by Robert Kanigher and Ross Andru.
Mercury first appeared in Showcase (DC, 1956 series) #37 (March-April 1962).
He used the alias "Mercurio" from Metal Men (DC, 1963 series) #37 (April-May 1969) through #41 (December 1969-January 1970).
Link: https://en.wikipedia.org/wiki/List_of_Metal_Men_members