Watchmen is a drama film, action film, superhero film, neo-noir, vigilante film, dystopian film, and alternate history film connected with United States film history. This guide focuses on confirmed credits and context, keeping the story overview spoiler-free.

Hellboy is a fantasy film, action film, horror film, monster film, and superhero film connected with United States film history. Every factual item below is drawn from structured source data when available.