Mary Bierbaum
Mary Bierbaum is credited as writer on 145 issues in grailworth's catalog, 105 issues of them across 17 series we value. Characters first seen in issues they wrote or drew include Timber Wolf, Thrust, Gina Manning and Helen Black.
Characters they introduced
Every issue
Badrock & Company (1994) 1 issue
Elvira's House of Mystery (1986) 2 issues
Extremely Youngblood (1996) 1 issue
Legion of Super-Heroes (1989) 50 issues
Return to Jurassic Park (1995) 4 issues
Savage Dragon (1993) 2 issues
Secret Origins (1986) 3 issues
Star (1995) 4 issues
StormQuest (1994) 4 issues
Supreme (1992) 2 issues
Supreme Annual (1995) 1 issue
Youngblood Strikefile (1993) 4 issues
Credits from the Grand Comics Database, CC BY-SA 4.0.