Leon Lazarus
Leon Lazarus is credited as writer on 49 issues in grailworth's catalog, 40 issues of them across 7 series we value. Characters first seen in issues they wrote or drew include The Black Rider, Matthew Masters, Satan and Jim Lathrop.
Characters they introduced
Every issue
Black Rider (1950) 1 issue
Kid Colt Outlaw (1949) 23 issues
Tales to Astonish (1959) 1 issue
Two Gun Kid (1953) 1 issue
Unknown Worlds (1960) 1 issue
Credits from the Grand Comics Database, CC BY-SA 4.0.