Len Dodson
Len Dodson is credited as writer on 36 issues in grailworth's catalog, 31 issues of them across 3 series we value. Characters first seen in issues they wrote or drew include Mysta of the Moon, Dr. Black, Claudia and Dorna.
Characters they introduced
Every issue
Jumbo Comics (1938) 1 issue
Man O' Mars (1953) 1 issue
Credits from the Grand Comics Database, CC BY-SA 4.0.