A new poster of Sivakarthikeyan starrer "Hero" has been released. In this poster, Sivakarthikeyan looks slick with a mask on his face like a superhero."Hero" is released on December 20. This stylish look of Sivakarthikeyan is widely shared on social media by his fans.It is worth noting that  "Action King" Arjun is playing the vital role in the film.