Who made the most issues of this run, with the issues they span.
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.
Who appears most often in this run, by issues they appear in.
The 1 Bozo the Clown issue of Four Color (Dell, 1942 series) (#285) is considered by Dell to be the first issue of this series.
Full indicia's (capitalization original): 2: BOZO THE CLOWN and the WEATHER WIZARD 3: BOZO THE CLOWN and THE MYSTERIOUS BOX OF SHADOWS Indicia and tracking information from Jon Ingersoll via the GCD Error List (October 10, 2009).
From the Grand Comics Database.