Bizarro could show up in the upcoming "Batman v Superman" film.

After the release of the trailer a few weeks ago, many fans were excited for the upcoming film and the revelation of Doomsday. However, it seems a new theory is surfacing the internet. Warner Bros. has kept the plot of the film a secret and it is unlikely that the studio would give the whole plot away in a film.

According to ComicBook.com, the creature at the end of the trailer may not actually be Doomsday but Bizarro. The theory may not be completely outlandish especially because in the comics Bizarro is sometimes an off-kilter genetic copy of General Zod's DNA. General Zod is in the trailer and he is being taken to a laboratory according to the clips seen. Lex Luthor seems to be behind the scientific experiments in the trailer and that would be similar to what happens in the comics.

ComicBook.com also notices that the creature at the end of the trailer has a bony appearance on the face and body that are more similar to the deteriorating figure of Bizarro.

While nothing is yet confirmed Warner Bros. is very aware that fans want to see popular villains in this upcoming world. The Joker and Harley Quinn are already going to appear in the upcoming "Suicide Squad" while Lex Luthor is the villain of the upcoming film. However, how this world will develop and interconnect is unknown.

The studio is currently developing Wonder Woman, Aquaman and Batman films as well as a potential "Flash" movie. There will also be a "Justice League" film in the mix.

"Batman v Superman: Dawn of Justice" tells the story of Batman and Superman at war after the events of "Man of Steel" and the consequences of two superheroes at odds. In the mix Lex Luthor plots to destroy the world.