A Unit (部隊, Butai ?) is a group of Border agents that consists of at least one combatant and one operator and the maximum number of four combatants and one operator.[1]
Ranks
The units are separated between A-rank, B-rank, and C-rank units, each with their own rankings. Currently, there are 9 A-rank units, 21 B-rank units, and 1 unregistered C-rank unit which are known throughout the series so far. These rankings are determined by the rank of the unit's lowest ranking member[2] or by points that they acquired during rank battles.[3] Additionally, their movements between ranks depend on their points, performance, and/or conducts.
Uniform
Each unit has its own uniform with different basic design.[3] They are created after the designer discusses its specifics with the development department. The majority of the uniforms use basic sports-related uniforms as a base and then add on to it. However, there are some more refined uniforms that are designed entirely by a designer from scratch while some were designed by the unit's members themselves.[2]
Emblem
B-rank's emblem
Those that are in B-rank use the same emblem with their current ranking embedded in the design. Meanwhile, those that are in A-rank have the privilege to have their own emblem. Other than being disbanded, they are allowed to keep their emblem even if they are demoted to B-rank.[4] A-rank also can receive a sum of merchandise that has its emblem on it.
Known Units
