Mister Monster versus the Nazi from Mars or Mister Monster: Worlds War Two

In this 2004 one-shot from Atomeka Press, Michael T. Gilbert (with art also by George Freeman) pits the pulp-style hero Mister Monster against a literal Nazi from Mars—a bizarre, retro-futuristic twist on World War II. A standalone oddity from Gilbert's long-running creator-owned series, it matters as a perfect example of his affection for Golden Age absurdity and horror-comedy, delivered with a single-minded, offbeat charm.