You can change your name on Erasmusu from the Edit Profile section.

You might find your name or picture in a Google search if the Google servers have not been updated yet. It might take some time for them to update them and for the results to not be visible in a Google search. We might have erased the information but it can still appear in Google. That is out of our hands. After some time, and depending on the search engine, the results will be updated.