Why my stack exchange profile picture is not replicated to all my stack exchange logins?
It appears only in stackoverflow profile.
I registered and login with my google account.
I don't use gravatar.
Just follow these steps,
See the image,
Since you can setup a different profile image on every site, it wouldn't be a good idea to update all of the profile images on all of the sites if you just updated it one one site.
In order to update it on every site you are on, click