Administrators are ConRunners who have "sysop rights".
These rights consist largely of the ability to delete or protect article pages, and to freeze user accounts. They have the ability to do an expedited revert of articles that have been vandalized. They can have power to change the look of the wiki to some extent by changing labels on tabs and menus. Other than that, the powers of a sysop are identical to those of a common user. Same tools, same software.
The the time of this writing, there are two sysops on ConRunner, Bill Taylor and Mike Willmoth. More will be added as the workload on the site warrants.