2PM Chan Sung unveiled a photo of himself with a unknown man with a mask of him.

Chan Sung posted a photo on his twitter on Feb 20 with a comment saying "I just arrived at the airport, ran into a doppelganger".

In the photo, Chan Sung is wearing a black jacket, standing next to a unknown man. The man is wearing a mask of Chan Sung, the outfit and even back packs are similar.

Fans commented "Hilarious!", 2PM's Ok Taek Yeon commented "The doppelganger looks great. Who is that?" giving hints it was him.

Photo: Chan Sung twitter