• Gong Yoo attends the 'Train To Busan' photocall during the 69th Annual Cannes Film Festival on May 14, 2016 in Cannes, France.

Gong Yoo attends the 'Train To Busan' photocall during the 69th Annual Cannes Film Festival on May 14, 2016 in Cannes, France. (Photo : Getty Images/Pascal Le Segretain)

"Goblin" cast and crew members have been hard at work completing the final episodes of the said tvN drama. Given the fantasy series' impending end, Gong Yoo's agency recently released an interesting behind-the-scenes clip that showed some of the actor's funny antics on set and his interactions with crew members.

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With Gong playing the titular character in the tvN drama "Goblin," also known as "Guardian: The Lonely and Great God," the South Korean celebrity would usually spend several hours on-set to film his scenes. The said filming activities can be very challenging for the actor especially with the prevailing cold winter season.

However, a recently released behind-the-scenes video showed Gong's charm and professionalism despite long filming hours. Unveiled by the actor's agency Management Soop through the Naver V app, as cited by Korea Herald, some of the shots featured Gong laughing with the tvN drama's crew members as he studied his script or prepared for his scenes.

The "Coffee Prince" actor even jokingly snubbed the cameraman as he noticed a camera focused on him during a filming break. After a quick staring contest with the camera, Gong shifted his body sideways before turning his back on the filming equipment while giving the camera a haughty head flip.

Other scenes included in the video footage showed Gong's intense focus as he acted out a scene that involved his character Shin worriedly waiting for Eun Tak (Kim Go Eun). Snippets of the actor's action scenes where he wielded the sword in the "Goblin" episode 13 were also featured in the said clip.

In other news, avid viewers have been eagerly awaiting the release of the fantasy series' final three episodes. It appears that the drama's production team took extra care in keeping the plot line of the upcoming finale a secret.

In a recent interview with South Korean news outlet TV Report, Yoon Da Yeong mentioned how cast members were given portions of the final episode's script that only involved their characters. Portraying the female grim reaper and a court lady who gave King Yeo (Lee Dong Wook) a poisoned concoction during the Goryeo dynasty, Yoon shared that she has no idea how the tvN drama will end.

"Goblin" will air episode 14 on Jan. 20, Friday while the final two episodes will be released back-to-back on Jan. 21, Saturday, on tvN. Watch a teaser clip for episode 14 below: