#1
Jigsaw
#1
Sep 1966
1st appearance of Super Luck
Catalog data from the Grand Comics Database is licensed CC BY-SA 4.0 and was normalized by The Collector. Cover images belong to their publishers.
#2
Dec 1966
1st appearance of Man from SRAM
Who made the most issues of this run, with the issues they span.
Who appears most often in this run, by issues they appear in.
Characters who debut here, led by those who appear most across the catalog.
A third issue was advertised (Little Dot 109, February 1967, inside front cover) where Jigsaw fights stone-men, "Perilous Puzzle!", but evidently never published.
From the Grand Comics Database.