Dr. Lieber

A supporting player from AC Comics' superhero universe, Dr. Lieber made their debut in Sentinels of Justice #6 in 1987 — right in the heart of the Copper Age, when independent publishers were carving out bold niches alongside the Big Two. With a modest but intriguing footprint across Paragon, Sentinels of Justice, and The Armageddon Factor, this character moves through some of AC's most action-packed corners, sharing pages with the likes of Scarlet Scorpion, Joan Wayne, and Charlie Starrett. Rare appearances can carry real mystique, and for collectors digging into AC's distinctive universe, Dr. Lieber is exactly the kind of find that rewards a deeper look.