Printed in U.S.A. Comics #2, November 1941 - 7 pages.
Zombo is the despicable and diabolical leader of a Pacific island, "a place of misery and terror". He is also a powerful hypnotist and now this "mast of men's minds" wants to use his submarine invention to sink every ship that come thru the surrounding shipping lanes! American craft especially". Rockman has other ideas.