In my VB instance I had the basic groups which included super-moderators.
In my xF instance I decided to no longer have a "super-moderator" and simply move that one person to the admin group with some trimmed permissions.
I *think* I deleted the usergroup the member was in and then tried to move the user to the admin group.
The user clearly shows as an Admin in Admin CP... But, no mater what I did, the user's group never changed in the "level title" - however they were able to do admin stuff.
So I had a user who was an Admin but listed on the forum as a "Guest"
No title over-rides, no custom titles, or anything....
I had to hit the database and manually flip the usertitle field in the user table.