IMDB profile

Alessio: I am assuming that everything on all four of these pages pertains to you. If there is anything there that is not about you, please hold off and let us know what that is.

But if indeed all four pages are entirely about you, you will want to submit three separate Name Merges, to merge Alessio Muzi (II), (III), and (IV) each to Alessio Muzi (I). 

***

Start by going to one of the pages that need to be merged such as Alessio Muzi (II) at https://www.imdb.com/name/nm10633963/ . Click "Edit page".

On the next screen, on the Name Merge line, select "Add merge". Scroll down and click "Continue".

On the next screen, there will be a blank line on which to enter your corrected name. Enter it as:

Muzi, Alessio (I)

Below that, there will be a checkbox labeled "Preserve previous name on existing credits. i.e. '(as Alessio Muzi)'". Un-check that box. It doesn't apply to this situation.

Below that, there will be an Explanation box. In that box, enter something like this: "I am Alessio Muzi, and my credits have been erroneously split among several pages with different roman numerals. All of the credits on these pages are mine, and so these pages should be merged." Click "Check these updates".

On the next screen, you will get a warning that says, "You are about to merge two separate name pages into one. Are you sure you wish to merge this name page into the page for Muzi, Alessio (I)? ..." That's what you want, so check the box marked "Warning understood, go ahead anyway." Click "Re-check these updates".

On the next screen, your data should appear with a green background, and you should be able to click "Submit these updates".

***

You can then proceed to repeat the process on the page for Alessio Muzi (III), and after that, for Alessio Muzi (IV).

Allow a few days for all of these merges to be processed. Good luck!