But just wait until season 2 debuts Sunday.

And a few episodes later, we find out what the young king might be like in the bedroom.

With his coronation, his malicious deeds amplify tenfold, Gleeson promises.

Image

Credit: Image Credit: Mitchell Haaseth/NBC

There are scenes where I just do malicious things for no reason.

Gleeson was taking questions from EW between filmingThroneslast fall in Croatia.

I kind of rebel against her, Gleeson says.

Im changing up the design of the Throne Room and kind of throw my toys all over the floor.

I really liked that scene just because thats the first time the audience sees Joffrey for who he is.

Theyve always been nothing but lovely, he says.

I havent gotten anybody coming up to slap or yell at me.

For more on season 2, buy EWs cover story onThroneshere.

PREVIOUS:Q&As withPeter DinklageandEmilia Clarktalking season 2.