Metal Men
The Metal Men are captured and put up for auction in a villain's scheme, a straightforward adventure for DC's robot heroes. Von Hammer and the Black Wolf appear briefly on page 2, a single-panel cameo as detailed wind-up toy versions that places the Enemy Ace in the wider DC universe just months after his debut.
A blink-and-you'll-miss-it appearance, but historically notable: this 1965 cameo is among the earliest evidence that DC editors saw Enemy Ace as a character with cross-title appeal. Kanigher was writing both series simultaneously, which explains the self-referential nod. Collectors hunting complete Enemy Ace appearances need this one.
