Gary Barnum
Gary Barnum is credited as writer on 8 issues in grailworth's catalog, 7 issues of them across 5 series we value. Characters first seen in issues they wrote or drew include Eugene Stone, Sidney Joern, Bacillus and Strontium-90.
Characters they introduced
Every issue
Avengers (1963) 1 issue
Incredible Hulk (1962) 2 issues
Marvel Comics Presents (1988) 2 issues
The New Warriors Annual (1991) 1 issue
Thor (1966) 1 issue
Credits from the Grand Comics Database, CC BY-SA 4.0.