Thread:BannedLagiacrus/@comment-1731233-20171217061705/@comment-26421638-20171217133501

Anyone can rename it since the pic isn't locked.

http://monsterhunter.wikia.com/wiki/File:Box_Art-MHXX_NSW.jpg

Next to Edit button you can see a downwards arrow, tap/click on it and opens a side menu and then tap/click on "Rename".