[The Australian Panther]

Doc Hormone - Wikipedia entry
https:en.wikipedia.org/wiki/Doctor_Hormone
"Doctor Hormone first appeared in Popular Comics #54 (Aug 1940), and his adventures ran until issue #60 (Feb 1941).[2]"
{American Comic Book Chronicles by Kurt Mitchell and Roy Thomas assert that the character was dropped because of the use of the Ku Klux Klan as villains: "Though down to approximately 30,000 members in 1941 (from a high of 4,000,000 a decade and a half earlier), the Klan and its sympathizers, many of them in positions of prominence, were still dangerous. To call them out as murderers and traitors, even in the pages of a comic book, was brave, perhaps too brave for Dell executives. Dr. Hormone was gone following issue #60, his storyline interrupted mid-cliffhanger."]

Link to the comment: Doctor Hormone Compilation