Jack Katz
Jack Katz is credited as penciller on 120 issues, inker on 73 issues, cover artist on 36 issues and writer on 32 issues in grailworth's catalog, 66 issues of them across 37 series we value. Characters first seen in issues they wrote or drew include The Heap, Warren Thompson, Margaret Thompson and Agnes Oakley.
Characters they introduced
Every issue
Adventures into Darkness (1952) 3 issues
Astonishing (1951) 1 issue
Battle (1951) 2 issues
Battle Action (1952) 1 issue
Battlefront (1952) 1 issue
Cowgirl Romances (1950) 1 issue
Creepy (1964) 1 issue
Falling in Love (1955) 3 issues
Fear (1970) 1 issue
Giant-Size Chillers (1975) 1 issue
Heart Throbs (1957) 1 issue
House of Secrets (1956) 1 issue
Journey into Mystery (1952) 1 issue
Jungle Action (1972) 1 issue
Marines in Battle (1954) 1 issue
Marvel Tales (1949) 1 issue
Menace (1953) 1 issue
Monsters on the Prowl (1971) 1 issue
My Love (1969) 1 issue
Mystery Tales (1952) 1 issue
Mystic (1951) 2 issues
Nightmare (1970) 4 issues
Our Love Story (1969) 1 issue
Psycho (1971) 3 issues
Secret Hearts (1949) 2 issues
Seduction of the Innocent! (1985) 3 issues
Strange Tales (1951) 3 issues
Sub-Mariner (1968) 1 issue
Uncanny Tales (1952) 2 issues
Vampirella (1969) 1 issue
Vault of Evil (1973) 1 issue
War Comics (1950) 3 issues
Wild Western (1948) 1 issue
Young Love (1963) 2 issues
Credits from the Grand Comics Database, CC BY-SA 4.0.