Joss Whedon
Joss Whedon is credited as writer on 146 issues in grailworth's catalog, 87 issues of them across 13 series we value. Characters first seen in issues they wrote or drew include Hisako Ichiki.
Characters they introduced
Every issue
Giant-Size X-Men (2005) 1 issue
Serenity (2005) 3 issues
Serenity Better Days (2008) 3 issues
Stan Lee Meets Spider-Man (2006) 1 issue
Superman / Batman (2003) 1 issue
Credits from the Grand Comics Database, CC BY-SA 4.0.