"Tommy"

A brief but intriguing presence in DC's Modern Age, "Tommy" made their debut in Countdown #5 in 2008, brought to life by the powerhouse creative team of Paul Dini, Keith Giffen, and Jim Starlin during one of DC's most ambitious countdown-to-crisis storylines. With only three catalogued appearances, this is a compact corner of comics history — yet one of those issues carries key-issue status, making it a collector's find worth tracking down. Sharing pages with heavyweights like Wonder Woman, Green Lantern, The Flash, The Atom, and Donna Troy, "Tommy" exists at the heart of a universe-shaking moment in DC continuity.