A stuntwoman for many years, Cassandra Ebner got her break on camera playing one of the Children of the Forrest on smash hit HBO series Game of Thrones. She recounts to Hot Press’s Ed Power about the experience.

“I had to wear full body prosthetics. We were outside, and it was cold. But the crew were amazing, and the white walkers were terrifying. The prosthetics are incredible,” says the actress.

That appearance along with a larger one on CW show Arrow added to her huge international following, one accumulated from being a blockbusting YouTube blogger.