Roger Slifer
Roger Slifer is credited as colorist on 50 issues, writer on 36 issues and letterer on 2 issues in grailworth's catalog, 79 issues of them across 33 series we value. Characters first seen in issues they wrote or drew include Vance Astrovik and Lobo.
Characters they introduced
Every issue
Amazing Adventures (1970) 1 issue
Amazing Spider-Man (1963) 2 issues
Batman (1940) 1 issue
Black Panther (1977) 1 issue
Captain America (1968) 4 issues
Captain Marvel (1968) 1 issue
Conan the Barbarian (1970) 1 issue
Dazzler (1981) 1 issue
Fantastic Four (1961) 2 issues
Ghost Rider (1973) 1 issue
Giant-Size Defenders (1974) 2 issues
Ka-Zar the Savage (1981) 1 issue
Machine Man (1978) 1 issue
Marvel Premiere (1972) 2 issues
Marvel Spotlight (1979) 1 issue
Marvel Super-Heroes (1990) 1 issue
Marvel Team-Up Annual (1976) 1 issue
Micronauts (1979) 4 issues
Moon Knight (1980) 1 issue
Power Man (1974) 2 issues
Shogun Warriors (1979) 1 issue
Spectacular Spider-Man (1976) 1 issue
Spider-Woman (1978) 1 issue
Star*Reach Classics (1984) 1 issue
What If? (1977) 4 issues
Credits from the Grand Comics Database, CC BY-SA 4.0.