Death is the one thing that unites mortals, and it is the one thing that distinguishes them. It is a journey with countless paths, but only one destination. Every man dies differently, but the Underworld that awaits them all is unchanging. And just as Death varies, so too do the Reapers who carry it out. A Reaper is much like a cloud; though each one is unique, with its own set of skills and experiences, it is not impossible to compare them, as all may be described as belonging to one of three distinct classifications.
All working Reapers fall under one (1) of three (3) broad categories: Assigned Reapers (AR), Patrolling Reapers, (PR), and Special Task (ST) Reapers. New Reapers are typically employed as AR, while the more experienced typically serve as PR, with ST typically reserved for only the most distinguished Reapers. Unfortunately, this terminology has become a loathsome mire of ambiguity. The abbreviations AR, PR, and ST were originally intended to refer to Reapers themselves. However, they may also refer to the type of work carried out by such a Reaper (to be described in further detail in the upcoming paragraphs). Furthermore, note that the categorization of a Reaper is defined solely by their current work, exemplī grātiā, A Reaper is considered an AR if, and only if, they are currently assigned to kill a particular mortal, id est, they are performing the duty of an AR. Even if they tend to be given such assignments, a Reaper is NOT an AR if they are not currently carrying out such assignments. It is not uncommon for a Reaper who is usually given AR work to be erroneously categorized as an AR, even when they are between jobs. A Reaper who is between jobs does not fall under any of the three (3) categories, as they are, by definition, reserved for working Reapers. One might maintain that there could be a 4th category for Off Duty Reapers, but this is not the official stance of the Bureau of Death.
This section would be incomplete if it did not mention the Special Task Force, (STF) a group closely related to, yet distinct from, the ST category. STF membership is conferred upon Reapers deemed capable of taking on Special Tasks. In all but the most dire of emergencies, Special Tasks will be assigned only to members of the STF. STF membership is different from the ST categorization in that it persists, even when the reaper is not currently assigned a Special Task.