Admins, Bcs and CMs Explained

Administrators
Administrators (also known as "admins") 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 Discussions 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. For example, User:MeddlerOfTime (hello, that's me!) has ADMIN next to their name.

It also says 'Bureaucrat' next to my name. You may be wondering, what's that? Well...

Bureaucrats
Bureaucrats (known also, on this Wikia, as Bcs) have the ability to manipulate user rights, as well as block and unblock users, so this right is generally used in addition to the administrator group. It is held by the founder of this Wikia.

They have the ability to promote and revoke rollback, Content Moderator, and administrator rights as well as appointing new bureaucrats. While they cannot directly remove another user's bureaucrat status, they can remove their own. Bureaucrats also have the ability to remove a user's bot status in case the bot is malfunctioning, but bot flag requests are handled by staff after being approved (by either a bureaucrat or the community).

Having this status causes the tag "BUREAUCRAT" to appear next to user's username on their profile.

The bureaucrat status can only be removed by Fandom Staff or by the Bureaucrat themselves.

There are also...

Content Moderators
Content Moderators are users who have additional tools available to moderate specific parts of the community. These tools are: Having this status causes the tag "CONTENT MODERATOR" to appear next to user's username in their profile.
 * Editing and moving fully protected pages
 * Deleting and undeleting pages and files
 * Editing and moving protected files
 * Rollback
 * Re-upload files
 * Protecting and unprotecting pages
 * Patrol pages if the community has the RecentChanges patrol feature enabled
 * Deleting article comments

That should be all one needs to know. Thanks for stopping by!