It might be time to start worrying about Superman (Henry Cavill), because Doomsday has officially arrived in the new trailer for Batman v Superman: Dawn of Justice.

The monster that killed the Man of Steel in the notorious "Death of Superman," Doomsday's involvement in the film isn't great news for the legendary Kryptonian. However, Doomsday could also provide a great reason for Batman (Ben Affleck) and Superman to move past their differences and unite against a common foe - with Wonder Woman's (Gal Gadot) help, of course.

Watch the full trailer below:

Batman v Superman: Dawn of Justice hits theaters March 25.