Which film played Avatar: Fire and Ash's teaser trailer before screenings?

The Fantastic Four: First Steps played Avatar: Fire and Ash’s teaser trailer before its theatrical screenings.

The pairing was a deliberate Disney and Marvel marketing event. Audiences attending The Fantastic Four: First Steps in theaters during its opening period were given an early big-screen look at Cameron’s third Avatar film before the teaser became broadly available online.

The trailer introduced the film’s darker direction, including the Ash People, a Na’vi group associated with fire, destruction and the loss of faith in Eywa. It also continued the story of Jake Sully and Neytiri’s family after the events of Avatar: The Way of Water.

The wording can cause confusion because trailers are often attached to selected formats, territories or opening-weekend engagements rather than every screening worldwide. The relevant film pairing, however, was The Fantastic Four: First Steps—not Jurassic World Rebirth, Superman or Thunderbolts.