180 – Princess Diana Prince

A panel from Sensation Comics #1. November 1941
A panel from Sensation Comics #1. November 1941

In Sensation Comics #1 (November 1941), Wonder Woman arrives in America with Steve Trevor and proceeds to foil a bank robbery, come up with a secret identity as a military nurse named Diana Prince, save Steve from falling to his death in aerial combat, foil Nazis parachutists, and destroy an entire poison gas facility. Pretty crazy first issue, right up there with Action Comics #1 and Detective Comics #27!