The star of new thriller Atomic has gone from musical punchline to the most successful member of his showbiz family.

However, no one was subjected to debilitating torture quite like Theon Greyjoy. Captured by the sadistic Ramsay Bolton (Iwan Rheon), Theon was tormented and broken to the point of losing his identity.

In an exclusive interview with EW, Iwan Rheon who plays the sadistic character, explained his actions. “It shows a level of ambition we’ve not yet seen,” he said.