The first teaser trailer for " Avengers: Doomsday " has arrived, revealing for the first time that Chris Evans will be back in the upcoming Marvel film. The trailer was shown in theaters before screenings of " Avatar: Fire and Ash " on Thursday, Dec. 18, but it has not been released online.

Doomsday’ sparked backlash from fans, who accused Marvel of relying on nostalgia to build hype for the upcoming team-up film.

The Russo Brothers released a short clip that isn't the more substantial video that should be in theaters soon.

Marvel Studios had planned a special four-part teaser rollout for Avengers: Doomsday, but the studio faces a setback as three out of the four teaser clips have already surfaced online.