Metal Men

Doc Magnus invented the Responsometer,  a device that animates robots and gives them sentience.  This allows the Metal Men to morph into liquid shapes but retain their solid form.  Each member is named after the element they are made from,  and their personalities reference properties of those elements.

First Appearance:  Showcase #37 (1962)
Creators:  Robert Kanigher,  Ross Andru,  Mike Esposito
Members:  Doc Magnus,  Gold,  Iron,  Lead,  Mercury,  Tin,  Platinum,  Copper,  Nameless

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Issues

Black entries are ongoing series
Green entries are Limited series
Red entries are One-Shots
Orange are alternate universe stories
Blue is for comments

Reading Order

Showcase #37 – First appearance of the Metal Men
Showcase #38
Showcase #39
Showcase #40

Metal Men #1 (1963)
Metal Men #2
Metal Men #3
Metal Men #4
Metal Men #5
Metal Men #6
Metal Men #7
Metal Men #8
Metal Men #9
Metal Men #10
Metal Men #11
Metal Men #12
Metal Men #13
Metal Men #14
Metal Men #15
Metal Men #16
Metal Men #17
Metal Men #18
Metal Men #19
Metal Men #20
Metal Men #21
Metal Men #22
Metal Men #23
Metal Men #24
Metal Men #25
Metal Men #26
Metal Men #27
Metal Men #28
Metal Men #29
Metal Men #30
Metal Men #31
Metal Men #32

The Brave and the Bold #187

Action Comics #590

Superman/Batman #34
Superman/Batman #35
Superman/Batman #36

Metal Men Vol. 3 #1 (2007)
Metal Men Vol. 3 #2
Metal Men Vol. 3 #3
Metal Men Vol. 3 #4
Metal Men Vol. 3 #5
Metal Men Vol. 3 #6
Metal Men Vol. 3 #7
Metal Men Vol. 3 #8

DC Comics Presents: Metal Men 100 Page Spectacular #1 (2011) – Reprints the Metal Men backups from Doom Patrol Vol. 5 #1-7