I don’t mean on the show they are in. I mean even in interviews and so forth.
First, there is Portia De Rossi. I haven’t done an extensive search, but I can not find a video of her speaking with her Australian accent. I have no idea why this would be, but even on an Australian chat show, she speaks with her American accent.
Then, we have John Barrowman. I can rather easily find him speaking in his Scottish accent, but it seems he usually does his American accent, even on game shows or interviews.
Anyone else that does not seem to use their regular accent even in interviews?
Christian Bale has said that he does his American accent for American interviews, and his natural English accent for British interviews. I don’t remember seeing any movie where he used his English accent, but he may have in Empire of the Sun; I haven’t seen that in a long time and don’t remember.
Mila Kunis might naturally have an accent…she was born and lived in…the Ukraine? I think? checks Wikipedia yup, the Ukraine. She speaks fluent Russian, as it was her first language…but she moved to the US at a fairly young age, so it’s very likely her accent has naturally disappeared, rather than just hiding it.
I always thought that Kenneth Branagh was putting on an English accent as I’d heard he was from Belfast. However, he left Belfast when he was 9 and moved to Berkshire so he’s probably not putting on his speaking accent.
Gillian Anderson was born in America but from the ages of two to eleven she lived in London and grew up speaking with a British accent. Her family returned to the United States when she was eleven and she had to learn an American accent. At this point, it’s hard to say what her native acent is and she uses either depending on where she’s at.
Please, folks. Read the OP. My first sentence stated that I am not talking about people who do accents on shows. Not Jamie Bamber, for example. He did Battlestar with an American accent, but always interviewed with his natural accent.