Pluto

Born in the very first flush of Marvel's Golden Age, Pluto made their debut in Red Raven Comics #1 in 1940, courtesy of creator R. Louis Golden — part of that thrilling early wave of characters that helped define what superhero comics could be. With appearances spanning an astonishing stretch from 1940 all the way to 2019, this is a figure whose presence quietly echoes across nearly eight decades of Marvel history. Pluto keeps genuinely distinguished company, sharing pages with none other than Steve Rogers, Bucky, and Hurricane across titles like Captain America Comics and Marvel Mystery Comics — the very heart of the Golden Age Marvel universe. For collectors who love tracing the deep roots of the House of Ideas, Pluto is a fascinating, rare thread connecting comics' earliest days to the modern era.