While in training, an individual is known as an initiate.
Wardens are the base rank of soldiers of the Arbiter.
Attendants attend directly to the Arbiter's orders and command the base Wardens.
Paladins are above that, the elite who are responsible for the most delicate missions of their order.
Custodians are the guardians of the Sanctum, maintaining its prisons and training initiates.
The Justicar is the top of the Wardens, the right hand man of the Arbiter.
Upon the death of the Arbiter, Danton Redwind became the last of the Wardens.