A man sits in a talk show chair with a caption laid over the image reading,

House of the Dragon star Fabien Frankel may appear fairly composed when he’s in character as Ser Criston Cole, but apparently the mask has slipped a couple of times on set.

During an appearance on The Tonight Show on Monday, Frankel told host Jimmy Fallon some amusing behind-the-scenes stories, showing a photo of himself sleeping in his armour (taken by his co-star Milly Alcock) before describing the very first, very nervous scene he shot where he managed to mess up a simple eye roll.

The director’s response at the time? « Fabien, what’s up with your face right now? »