Serg Moren
Serg Moren is credited as penciller on 8 issues and inker on 8 issues in grailworth's catalog, 8 issues of them across 2 series we value. Characters first seen in issues they wrote or drew include The Heap.
Characters they introduced
Every issue
Nightmare (1970) 4 issues
Psycho (1971) 4 issues
Credits from the Grand Comics Database, CC BY-SA 4.0.