One 'Mockingjay' movie spoiler which fans can look forward to is the addition of Robert Knepper to the 'Hunger Games' cast. His character is not included in Suzanne Collins' trilogy but producers believe that  such character will be pivotal to 'Mockingjay' movie.

The 'Arrow' actor will be giving life to Antonius whose real role in the film remains a secret. However, since he often plays the role of villain, does it mean that he will likewise cause chaos to Katniss and Peeta's life?

"I don't even know yet! I know what I read for. I read, this was last summer. This is a huge movie. This is a huge two movies, and I know that what I got is not what I'll end up doing, they're so secretive about this," he told MTV.

Though he he claims not to know about Antonius' role in the 'Mockingjay' movie, he confessed that he'd go to Paris to shoot his scenes.

Speculations have circulated about Antonius' identity.  Is Antonius the father of Katniss? Is Antonius Peeta's torturer the time he got captured by the Capitol? Apart from being Peeta's torturer, some consider Antonius to be President Snow's minister.

Since his television roles are oftentimes painted in bad light, 'Hunger Games' devotees cannot help but think that Knepper will have a cruel part in the film.

Lionsgate has not yet commented about the additional character in the 'Mockingjay' movie which will be shown on November 2014.