Border

Border (ボーダー) is an agency in Mikado City. It was created for the sake of protecting the city from Neighbor attacks. They fight the Neighbors by the means of something called a Trigger, the technology of Neighbors.

History
Main Article: Old Border Before it became publicly known, Border was a secret organization with the purpose of being an intermediary between ‘Earth’ and Neighbors. Along with its establishment, Border has made an alliance with three Neighbor nations and used the building that later became Tamakoma's base as its headquarters.

Between its establishment and 6 years before the start of the series, Border had 19 people within its ranks. However, about a year later, an allied nation was invaded by a hostile nation and when Borders sent its forces to assist, 10 out of 19 died, with some becoming Black Triggers. After the incident, the organization split into two, one became the current Headquarters and the other became Tamakoma Branch.

About 4.5 years before the start of the series, Border made its first public appearance when the First Large-Scale Invasion occurred. Soon after that, Border built their Headquarters in the middle of an area known as the Danger Zone and began recruiting new members.

Administration

 * Masamune Kido (Border Headquarters Commander-in-Chief)
 * Masafumi Shinoda (Border General Manager & Commander of the Self-Defense Unit)
 * Kyōko Sawamura (Border General Manager Counsellor)
 * Motokichi Kinuta (Headquarters Development Chief)
 * Eizō Netsuki (Media Countermeasures Chief)
 * Katsumi Karasawa (Foreign Affairs Operations Manager)
 * Takumi Rindō (Tamakoma Branch Chief)
 * Yūgo Kuga (Former Commander-in-Chief)
 * Sōichi Mogami (Former Upper Echelon)

General Staff

 * Raizō Terashima (Chief Engineer)
 * Seiji Mizunuma (Director of Human Resources)

S-Rank

 * Tsukihiko Amō (HQ)

A-Rank (Elite, about 30 people)

 * Tachikawa Unit 01
 * Kei Tachikawa (Tachikawa Unit Leader)
 * Kōhei Izumi
 * Takeru Yuiga
 * Yuu Kunichika (Tachikawa Unit Operator)


 * Fuyushima Unit 02
 * Shinji Fuyushima (Fuyushima Unit Leader)
 * Isami Tōma
 * Risa Maki (Fuyushima Unit Operator)


 * Kazama Unit 03
 * Sōya Kazama (Kazama Unit Leader)
 * Shirō Kikuchihara
 * Ryō Utagawa
 * Kaho Mikami (Kazama Unit Operator)


 * Kusakabe Unit 04
 * Saki Kusakabe (Kusakabe Unit Leader and Operator)
 * Shun Midorikawa
 * Ryūji Saeki
 * Kazuma Satomi
 * Hayato Uno


 * Arashiyama Unit  05
 * Jun Arashiyama (Arashiyama Unit Leader)
 * Ai Kitora
 * Mitsuru Tokieda
 * Ken Satori
 * Haruka Ayatsuji (Arashiyama Unit Operator)


 * Kako Unit 06
 * Nozomi Kako (Kako Unit Leader)
 * Futaba Kuroe
 * Mai Kitagawa
 * An Kobayakawa (Kako Unit Operator)


 * Miwa Unit 07
 * Shūji Miwa (Miwa Unit Leader)
 * Yōsuke Yoneya
 * Tōru Narasaka
 * Shōhei Kodera
 * Ren Tsukimi (Miwa Unit Operator)


 * Katagiri Unit 08
 * Takaaki Katagiri (Katagiri Unit Leader)
 * Yukimaru Ichijō
 * Asumi Amakura
 * Tōichirō Momozono
 * Karin Yuitsuka (Katagiri Unit Operator)


 * Kizaki Unit unranked
 * Reiji Kizaki (Kizaki Unit Leader)
 * Kirie Konami
 * Kyōsuke Karasuma
 * Shiori Usami (Kizaki Unit Operator)


 * Unknown Unit
 * Yūichi Jin

Top Tier

 * Ninomiya Unit 01
 * Masataka Ninomiya (Ninomiya Unit Captain)
 * Sumiharu Inukai
 * Shinnosuke Tsuji
 * Aki Hiyami (Ninomiya Unit Operator)


 * Kageura Unit 02
 * Masato Kageura (Kageura Unit Captain)
 * Yuzuru Ema
 * Hiro Kitazoe
 * Hikari Nire (Kageura Unit Operator)


 * Ikoma Unit 03
 * Tatsuhito Ikoma (Ikoma Unit Leader)
 * Satoshi Mizukami
 * Kōji Oki
 * Kai Minamisawa
 * Maori Hosoi (Ikoma Unit Operator)


 * Mikumo Unit (Tamakoma Second) 04
 * Osamu Mikumo (Mikumo Unit Captain)
 * Yūma Kuga
 * Chika Amatori
 * Hyuse (recent addition)
 * Shiori Usami (Mikumo Unit Operator)


 * Ōji Unit 05
 * Kazuaki Ōji (Ōji Unit Leader)
 * Kazuki Kurauchi
 * Yutaka Kashio
 * Haya Kittaka (Ōji Unit Operator)


 * Azuma Unit 06
 * Haruaki Azuma (Azuma Unit Captain)
 * Noboru Koarai
 * Tsuneyuki Okudera
 * Mako Hitomi (Azuma Unit Operator)


 * Kuruma Unit (Suzunari First) 07
 * Tatsuya Kuruma (Kuruma Unit Captain)
 * Kō Murakami
 * Taichi Betsuyaku
 * Yuka Kon (Kuruma Unit Operator)

Middle Tier

 * Yuba Unit 08
 * Takuma Yuba (Yuba Unit Leader)
 * Yukari Obishima
 * Kazuto Konooka
 * Nono Fujimaru (Yuba Unit Operator)


 * Katori Unit 09
 * Yōko Katori (Katori Unit Captain)
 * Yūta Miura
 * Rokurō Wakamura
 * Hana Somei (Katori Unit Operator)


 * Suwa Unit 10
 * Kōtarō Suwa (Suwa Unit Captain)
 * Daichi Tsutsumi
 * Hisato Sasamori
 * Rui Osano (Suwa Unit Operator)


 * Arafune Unit 11
 * Tetsuji Arafune (Arafune Unit Captain)
 * Yoshito Hanzaki
 * Atsushi Hokari
 * Rin Kagami (Arafune Unit Operator)


 * Nasu Unit 12
 * Rei Nasu (Nasu Unit Captain)
 * Yūko Kumagai
 * Akane Hiura
 * Sayoko Shiki (Nasu Unit Operator)


 * Kakizaki Unit 13
 * Kuniharu Kakizaki (Kakizaki Unit Captain)
 * Fumika Teruya
 * Kotarō Tomoe
 * Madoka Ui (Kakizaki Unit Operator)


 * Ebina Unit 14
 * Takahiro Ebina (Ebina Unit Leader)
 * Yukito Otogawa
 * Shō Motegi
 * Sakurako Taketomi (Ebina Unit Operator)

Lower Tier

 * Urushima Unit 15 (or 16)
 * Wataru Urushima (Urushima Unit Leader)
 * Rika Rokuta (Urushima Unit Operator)


 * Matsushiro Unit 16 (or 15)
 * Hitoshi Matsushiro (Matsushiro Unit Leader)
 * Masakuni Hakoda
 * Yūya Tsuchizaki
 * Ayumu Hatori (Matsushiro Unit Operator)


 * Chano Unit 17
 * Makoto Chano (Chano Unit Captain)
 * Itsuki Fujisawa
 * Megumi Tokura (Chano Unit Operator)


 * Tokiwa Unit 18
 * Mamoru Tokiwa (Tokiwa Unit Leader)
 * Tokiya Saitō
 * Waka Utsunomiya
 * Yoshinobu Kera
 * Hazuki Nanao (Tokiwa Unit Operator)


 * Hayakawa Unit 19
 * Satoru Hayakawa (Hayakawa Unit Leader)
 * Ryōgo Funabashi
 * Zenji Marui
 * Asami Taya (Hayakawa Unit Operator)


 * Yoshizato Unit 20
 * Yūichirō Yoshizato (Yoshizato Unit Leader)
 * Hanao Tsukimi
 * Hidetaka Kitazoe
 * Asuka Asagiri (Yoshizato Unit Operator)


 * Mamiya Unit 21
 * Keizō Mamiya (Mamiya Unit Leader)
 * Mitsuya Koinuma
 * Minoru Hata
 * Aoi Kusumoto (Mamiya Unit Operator)

C-Rank (Trainee, more than 400 people)

 * Izuho Natsume
 * Kōda Unit (unofficial)
 * Teruteru Kōda
 * Fumifumi Saotome
 * Hidehide Hinoe

Factions
According to Jin, there are 3 different factions in Border, each with a different doctrine:

There are also unaligned agents and teams, such as Kageura and Nasu units.

Branches
There are 6 branches in Border. Personnel that are not aiming for A-Rank are associated with a branch. They are placed on the outside of the danger zone, and act as a contact point for locals.
 * Tamakoma
 * Suzunari
 * Wataayu
 * Yumite District
 * Hayanuma
 * Hisama

Roles
Border members fight Trion Soliders who invade Mikado City. However, they are not always at the scene in time, leaving citizens to fend for themselves or if there's an agent, to fight it themselves. A-class and B-class members get paid, although C-class trainees don't.

Trivia

 * In the Viz version, it was called Border Defense Agency, which is also in Border's logo.
 * The uniforms of current Border agents are different from those of Old Border members due to the engineers increasing in number.[BBF Q271]
 * Border agents are split between those who constantly use a trion body at HQ and those who don’t. The former are rumored to have problems sleeping due to their flesh and blood bodies not getting tired.[BBF Q219]