Custodians are maintenance users who are entrusted with extra tools to move files and suppress the creation of redirects when moving pages or files. Custodians are also able to view the edit summaries within deleted pages and are not affected by rate limits. Users who perform such maintenance work are expected to suppress redirects when moving any files, and clear any redlinks that their moves may have created.
To request custodian rights, please go to Tesseract:Requests for permissions.
To be eligible for the custodian usergroup, a user must have 400 edits in the mainspace and 150 edits in the file namespace. These requirements can be overlooked for trustworthy users at an admin's discretion.
A list of all Custodians can be found here.