Horace Mopple
From superman.nu: Supermanica
Horace Mopple
An alias employed by Superman when after donning civilian clothes and a false mustache, he reponds to an advertisement for Metropolis muscle building emporium that claims it can transform ordinary men into "supermen" in "ten easy lessons" (S No. 151, Feb 1962: "The Man who Trained Superman!").
(See: Conrad Krugg)