Slim

Slim stepped onto the Golden Age stage in 1943's Comic Cavalcade #2, brought to life by Ted Udall and Joe Gallagher at what would become DC Comics — sharing those early pages with luminaries like Green Lantern, The Flash, and Hawkman, which gives you a real sense of the electric company this character kept. What's quietly remarkable is that Slim's presence in the catalog stretches all the way from 1943 to 2006, turning up across Flash Comics, Comic Cavalcade, and even the Infinite Crisis Companion — a span of over six decades that speaks to a stubborn, enduring place in DC's sprawling history. With only nine recorded appearances, Slim is the kind of discovery that rewards the dedicated digger: a genuine Golden Age original whose footprint is small but whose timeline is surprisingly long.