mcu

The Marvel Cinematic Universe (MCU) is a media franchise and shared fictional universe centering on characters from Marvel Comics. Produced by Marvel Studios and distributed by Walt Disney Studios Motion Pictures, the MCU connects films and television series through overlapping characters, events, and settings. The franchise began with Iron Man (2008), directed by Jon Favreau, and has since expanded into a large, ongoing continuity overseen by producer Kevin Feige.

It operates in phases that mark a sequence of storytelling and releases. Phase One established the core Avengers ensemble; subsequent phases broadened the roster and scope, culminating in major crossover events and, in recent years, integrating streaming series on Disney+. The introduction of a multiverse storyline through various films and series has allowed alternate timelines and new character introductions while maintaining continuity for long-running arcs.

Beyond its box office performance, the MCU has influenced contemporary franchise-building and transmedia storytelling, shaping audience expectations for cross-film and cross-series connections, post-credits scenes, and coordinated marketing. The franchise has expanded to international markets and related media including tie-in comics, video games, and merchandise.

Other uses: MCU is also an acronym for microcontroller unit, an integrated circuit designed to perform dedicated control tasks in embedded systems. In electronics and hardware contexts, MCU commonly denotes microcontroller units, which are distinct from the Marvel Cinematic Universe.