John Devlin
John Devlin is credited as penciller on 108 issues, inker on 107 issues, writer on 48 issues and cover artist on 12 issues in grailworth's catalog, 61 issues of them across 6 series we value. Characters first seen in issues they wrote or drew include Plastic Man, Phantom Lady, The Human Bomb and Firebrand.
Characters they introduced
Every issue
National Comics (1940) 2 issues
Single Series (1938) 1 issue
Credits from the Grand Comics Database, CC BY-SA 4.0.