By that I don't mean that they are bad actors but that they are so attached with one character that they always seem to become a caricature of themselves.
So for example yesterday DD and I watched Christopher Robin the movie. As soon as Mark Gatiss came on, despite playing a serious character, all I could see/hear was "Yes Mrs Levinson".
Now watching Night at the museum. Ricky Gervais always sounds like David Brent.
Can anyone think of any other actors that you struggle to see in other roles?