Administrator

The FreeBSD equivalent to WinNT/2K/XP's Administrator account is the root account. Like Administrator, root is the most privileged user account, but unlike Administrator, there are absolutely no system processes more privileged than root and there is no restriction on what root can do on a FreeBSD system. Including copying a jpeg over the primary system hard drive's partition table. "With great power comes great responsibility."

On unix systems, the init process is the "root" process and all other processes can be considered "child" processes of it. As root, you can change the init status of your system.