This issue also marked the first appearance of his most commonly known "calendar cape" costume. His next appearance in "Batman" #384-385 (June–July 1985) and "Detective Comics" #551 (June 1985), sees the Calendar Man at the onset of the Crisis being used as a pawn of the Monitor in an attempt to find an assassin to eliminate Batman. In this instance, the Calendar Man's theme is holidays, and he attempts to use the young Jason Todd, as Robin, as the Batman's Achilles' heel, with the promise of his demise on the first day of Spring. Ultimately, however, Robin himself captures the villain.