Sysops (System operators) are special users of Wikitemp who can Block users, protect and delete pages as well as edit already protected pages.
Bureacrats are able to change the permissions of other users. Possible permissions are: Sysop, Bureacrat, Bot.
Automated robotic users.
Forum Staff members
Some members who are staff members on the forum have their own "Staff members" group. They have some additional rights, though they are technically not Wiki staff.
For the list of members, see here.
Former Wiki Staff
These members have left the Wiki Staff: