The Atom

The Atom (1963–present, Mimosa Comics) launched as a one-issue series, introducing a diminutive hero whose size-shifting abilities defined a new kind of superhero. Though brief, this debut issue established the character’s core premise and visual identity, with the era’s classic comic-book storytelling shaping his legacy. The series remains a foundational touchstone for fans of Silver Age innovation, its single installment a compact yet influential piece of superhero history.