Black Widow is the common English title used for Marvel's spy-action franchise centered on Natasha Romanoff, a former assassin and agent who becomes a superhero and covert operative. The character appears across comics, animation, films, and related media, with the most widely recognized modern version being the Marvel Cinematic Universe portrayal. Because the title is already the main and most-used name in English, there is no separate romaji master title to convert for this series.