Ruler

Rulers (지배자, Jibaeja,"Rulers") are the overlords of a Floor. They are always someone of a level equal to a High Ranker. May be called different things, depending on Floor (“President, "Boss" “Chief" etc.). Rulers rule with the permission and consent of the Guardians.

Also, the Ruler has the right to make absolute decisions in regards to the tests on his/her Floor. However, if the Guardian objects to the test, the Ruler must obey the Guardian's wishes, because all rules that were created by authority of the Ruler of the Floor and his subordinates are completely meaningless in front of Guardian and his dictates. (Ch 58)