The Challenger #2 Issue: The Challenger #2 Year: 1945 Significance: Was a ground Breaking series promoting tolerance and racial harmony. It featured an interracial trio of men fighting alien monsters with names like fear and hate. Book is a Ghost Previous Next Related Flash Rebirth #8 2016 Black Keys, Modern Age DC: The New Frontier #3 Black Keys, Copper Age Free Comic Book Day 2022: Avengers / X-Men: Judgment Day #1 Black Keys, Modern Age