Chad Grothkopf
Chad Grothkopf is credited as inker on 211 issues, penciller on 209 issues, cover artist on 56 issues, letterer on 51 issues and others in grailworth's catalog, 132 issues of them across 16 series we value. That includes 1 key issue, such as Detective Comics #38 (1937). Characters first seen in issues they wrote or drew include Lex Luthor, The Black Pirate, Jon Valor and Clayface.
Key issues
Characters they introduced
Every issue
'Mazing Man Special (1987) 1 issue
Action Comics (1938) 24 issues
All Select Comics (1943) 1 issue
All-Star Comics (1940) 4 issues
Detective Comics (1937) 24 issues
Fawcett's Funny Animals (1942) 28 issues
Flashback (1973) 3 issues
Funny Book (1942) 1 issue
Kid Komics (1943) 1 issue
Mystic Comics (1940) 1 issue
Tom Mix Western (1948) 2 issues
World's Finest Comics (1941) 3 issues
Credits from the Grand Comics Database, CC BY-SA 4.0.