John Campbell
John Campbell is credited as writer on 59 issues in grailworth's catalog, 47 issues of them across 4 series we value. Characters first seen in issues they wrote or drew include Tiger Girl.
Characters they introduced
Every issue
Fight Comics (1940) 43 issues
Rangers of Freedom Comics (1941) 1 issue
Shadow Comics (1940) 2 issues
Starstream (1976) 1 issue
Credits from the Grand Comics Database, CC BY-SA 4.0.