Action Comics swap bodies with a gorilla and his strip was renamed Congorilla. The introduction of Supergirl by Otto Binder and Al Plastino occurred in issue #252 (May 1959). Following this debut appearance, Supergirl adopted the secret identity of an orphan "Linda Lee" and made Midvale Orphanage her base of operations. In "Action Comics" #261 (February 1960), her pet cat Streaky was introduced by Jerry Siegel and Jim Mooney. Supergirl joined the Legion of Super-Heroes in issue #276 and acted for three years as Superman's "secret weapon," until her existence was revealed in "Action Comics" #285 (January 1962). In the view of
Action Comics on the title with issue #19, where unlike the previous issues, the setting for the "Action Comics" series would now take place in the present. Diggle announced his resignation as the writer of the series shortly before his first issue went on sale. Diggle left the title with only one issue completed (he would be co-writer for #20 and co-plot issue #21), with Daniel taking on full scripting and art duties for the two following issues completing the three part story arc "Hybrid". Scott Lobdell wrote the series after Diggle and Daniel's departure. Writer Greg Pak and artist Aaron Kuder