Main characters who hid their prowess?

This is the third time I ask this question because I didnt get much satisfaction from previous times.

I am looking for novels in which the main character hide their identity, power, or inteligent. In short, they are those who are much more than what they appear to be initially, fooling the other characters and readers at the same time.

Plot twist will be prefered, though not necessary.

Not comics though, because almost all the superheroes hide their identity.

I have read scarlet pimpernel, the queens thief, hurog duology, and name of the wind.