‘Game of Thrones’ The Mountain Transforms Into Incredible Hulk for Kids Birthday Party (Video)

“Game of Thrones” star Hafþór Júlíus Björnsson terrifies children as “The Avengers” character

“Game of Thrones” star Hafþór Júlíus Björnsson, who plays The Mountain, surprised birthday partygoers recently when he dressed up as  The Incredible Hulk, according to an Icelandic news report.

The actor, known as the strongest man in Iceland, spent two hours in a makeup studio to transform into the “Avengers” superhero.

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“Few know the Hulk actually lives in Iceland,” he joked.

The birthday boy initially shrieked in terror when Björnsson entered the room.

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However, cooler heads prevailed as the actor playfully lifted everyone in the room over his shoulders.

Watch the video above.