Tom Mason
Tom Mason is credited as writer on 94 issues and colorist on 10 issues in grailworth's catalog, 57 issues of them across 19 series we value. Characters first seen in issues they wrote or drew include Manhattan Project and Prototype.
Characters they introduced
Every issue
Avengers / Invaders (2008) 2 issues
Batman Beyond Universe (2013) 1 issue
Break-Thru (1993) 1 issue
Ex-Mutants (1992) 3 issues
Exiles (1993) 1 issue
Guarding the Globe (2010) 1 issue
Logan's Run (1990) 4 issues
Mantra (1993) 1 issue
Mantra (1995) 1 issue
The Phantom (2003) 1 issue
Shattered Earth (1988) 1 issue
The Strangers (1993) 1 issue
Zillion (1993) 1 issue
Credits from the Grand Comics Database, CC BY-SA 4.0.