Avengers: Doomsday trailer netizens say Doctor Doom may outshine Thanos

A company called Marvel makes movies about superheroes.

They just showed a new trailer, which is a short preview, for a movie called Avengers: Doomsday.

In this movie, a famous actor named Robert Downey Jr. plays a villain called Doctor Doom.

He used to play a good guy named Iron Man, also called Tony Stark.

Now fans are excited to see him as a bad guy in a big metal mask.

Many people wrote about the trailer on Twitter, a social media website.

Some said Doctor Doom might be even more awesome than Thanos, the scary villain from older Avengers movies.

The trailer also shows many other heroes, like Thor, Captain America and Loki.

The Fantastic Four and the X-Men will be in the movie too.

That means it will be a very big superhero adventure with lots of characters.