Jack

Stepping out of the Silver Age in 1966, Jack made their DC Comics debut in the pages of Justice League of America #43, brought to life by the legendary team of Gardner Fox and Mike Sekowsky. It's rarefied air to share the page with icons like Batman, The Flash, Green Lantern, Hawkman, and Robin, and yet here Jack is, woven into the fabric of DC's storied history across a remarkable span stretching all the way to 2025. Turning up in cornerstone reference works like Who's Who: The Definitive Directory of the DC Universe and the sweeping retrospective DC Universe: Legacies, this is a character whose place in the broader tapestry of DC lore is quietly but genuinely cemented — a fascinating find for any collector digging into the Silver Age's rich, sprawling corners.