Detective Comics #38

This April 1940 issue of Detective Comics proudly announces "The Sensational Character-Find of 1940" right on the cover, where a confident, cape-billowing Robin bursts forward from a circular spotlight while Batman stands tall at his side in full costume. The cover art — penciled by Bob Kane and inked by Jerry Robinson — presents the Dynamic Duo as a natural pairing, with Robin's bold red-and-green costume and yellow cape contrasting beautifully against Batman's familiar grey-and-blue. It's a striking piece of Golden Age craft that captures the excitement DC was clearly feeling about introducing a young partner to Gotham's guardian.