The art is uncredited but I think it’s based on an episode of The Addams Family.Next a neat cover by Robert Gibson Jones.
This uncredited 1949 cover is a good example of how paperbacks used to sell with sex (it’s not the primary thing I think of when I think of Gladiator)
And finally a cover I like by Alex Schomberg
#SFWApro. All rights to covers remain with current holder.