Admin

Administrators (also known as "admins" or "sysops") are trusted users who are generally chosen by the community and also have access to the following rights: For more details, see the Help:Administrators' how-to guide.
 * All privileges from the Discussions Moderator and Content Moderator groups.
 * Block users who are vandalizing the wiki from editing and other actions.
 * Grant and revoke both the Chat Moderator and Discussion Moderator rights.
 * Edit the community's skin and format.
 * Edit white-listed MediaWiki pages.

Being an administrator makes the tag "ADMIN" appear next to a user's name on their profile, unless changed on MediaWiki:User-identity-box-group-sysop.