A-Rank Tachikawa Squad is one of Border's strongest teams, and No. 1 in the A-Rank ranking. Their emblem is a design with a crescent moon and three sword blades, diagonally arranged parallel to each other. ; : :The leader of Tachikawa Squad and Masafumi Shinoda's apprentice, who is charismatic and cocky and a good strategist. He is Border's No. 1 agent, and is said to be better at true swordsmanship than Jin. He and Jin have been rivals for a long time, and he is excited when Jin returns to participating in the Rank Wars, as it means he gets to compete against him again. ; : :A member of Tachikawa Squad and a reckless Shooter who thinks blowing things up is the best option, which has earned him the nickname "bullet idiot" from Yōsuke Yoneya. He tends to combine his bullets into stronger ones. ; : :A member of Tachikawa Squad and a Gunner. He is the son of Border's biggest sponsor and is narcissistic. Despite having requested to be placed in an A-Rank Squad, which led to Masamune Kido placing him in the Tachikawa Squad, he lacks the skills needed to be an A-Rank agent. ; : :Tachikawa Squad's operator, who likes to play video games with her teammates Izumi and Tachikawa.
Fuyushima Squad is team No. 2 in the A-Rank ranking. Their emblem is a
knight chess piece with
unicorn horn. ; : :The captain of Fuyushima Squad and a Trapper. He did not participate in the raid to take Yūma's black trigger, which Tōma states is because he had sea-sickness. ; : :A Sniper and the No. 1 Sniper of Border, who was Azuma's student. He is arrogant and likes teasing Narasaka, the No.# 02 Sniper, but is friendly and able to recognize strong opponents.
Kazama Squad is team No. 3 in the A-Rank ranking, who rose in the A-Rank ranking thanks to Kikuchihara's side effect. Their emblem is a crossed-out eye. ; : :The leader of Kazama Squad. A 21-year-old Attacker who is serious and stoic. ; : :An All-Rounder from Kazama Squad. Unlike the stoic Kazama and the foul-mouthed Kikuchihara, he is gentle and friendly. ; : :An Attacker from Kazama Squad. He is a foul-mouthed young boy with little respect for those he considers weak and even his teammates, and seems to consider himself more important than he really is. However, he values his "friends and buddies". ; : :The second operator of Kazama Squad after Usam.
Kusakabe Squad is team No. 4 in the A-Rank ranking. Their emblem is a dragon-headed rooster, with a design resembling a
laurel wreath behind it. ; :The Operator and Leader of Kusakabe Squad. ; : :A 14-year-old boy and an Attacker of Kusakabe Squad. He is a prodigy, having reached A-Rank at a young age and managing to defeat a Neighbor simulation in four seconds on his first attempt. He is shown to be arrogant and enjoying showing off until Yūma humbles him after attempting to humiliate Osamu, who he was jealous of for being recruited into Tamakoma. ; :An All-rounder and member of Kusakabe Squad. ; :The No. 1 Gunner and Member of Kusakabe Squad. ; :A Sniper and member of Kusakabe Squad.
Arashiyama Squad is team No. 5 in the A-Rank ranking. They are known as "the face of Border" due to their frequent appearances in Border propaganda and promotional materials. Because they spend much of their time promoting Border, many people mistakenly believe that they are inferior to the other A-rank teams. Their emblem is a design of five black pentagons with a white star symbol inside each, arranged to form another star symbol. ; : :The leader of Arashiyama Squad and an All-Rounder. He is fun-loving and charismatic and a loving older brother to his brother and his sister . He befriends Osamu and Yūma after they save the students of their school, including his siblings, and later congratulates Osamu on his promotion and Yūma for joining Border. ; : :An All-Rounder of Arashiyama Squad who considers Osamu to be her rival and seeks to be better than him. She is a child prodigy, having joined Border as an A-Rank member as a middle schooler, and is gentle and humble and willing to help those in need. ; : :An All-Rounder from Arashiyama Squad. He is calm and quiet and does not talk much unless he has something important to say. ; : :The Sniper of Arashiyama Squad, who is cocky but friendly. He is the only sniper able to fire two rifles simultaneously without losing any precision. ; : :The Operator of Arashiyama Squad.
Kako Squad is team No. 6 in the A-Rank ranking and an all-girls team. Their emblem is composed of a butterfly with spread wings, with the uppercase letter K in place of the lower right wing's pattern. ; : :The leader of Kako Squad and a Shooter, who enjoys battles. Jin mentions her as being a candidate for the
Fūjin. ; : :Kuroe is a Attacker of Kako Squad, who Tsutsumi mentions as a prodigy along with Kitora and Midorikawa, having defeated a Neighbor simulation in 11 seconds on her first attempt. ; :A Trapper and member of Kako Squad ; :The operator of Kako Squad
Miwa Squad is team No. 7 in the A-Rank ranking. Their emblem is composed of two black snakes spiraling around a bullet. ; : :An All-Rounder and the captain of Miwa Squad, who was a member of the original Azuma Squad. He joined Border to avenge his sister after she was killed by a Neighbor, which caused him to harbor hatred towards Neighbors. His main trigger is the Asteroid, which has no special ability but is equipped with the ability , which can bypass shields and immobilize enemies. ; : :An Attacker of Miwa Squad, who is fun-loving and loves a good battle. He uses the trigger Gen'yō Kogetsu. Unlike his teammates, he does not hate Neighbors, and wants to battle with Yūma just for fun. ; : :A Sniper of Miwa Squad and the No. 2 Sniper of Border, who was Azuma's student. He harbors hatred against Neighbors as a result of his house being destroyed in an invasion. ; : :A Sniper of Miwa Squad, who, like Narasaka, harbors hatred against Neighbors as a result of his house being destroyed in an invasion. ; : :The Operator of Miwa Squad and the operator of the original Azuma Squad, who was a childhood friend of Kei and mentored him in tactics. She was Azuma's student.
Katagiri Squad is team No. 8 in the A-Rank ranking. Their emblem is a snowflake with a black background. ; :The No. 3 Gunner and captain of Katagiri Squad ; :An Attacker of Katagiri Squad. ; :A Sniper of Katagiri Squad. ; :A member of Katagiri Squad and the only Spotter in Border. ; :The Operator of Katagiri Squad, who was the Operator for the second generation of Azuma Squad.
B-Rank Ninomiya Squad is team No. 1 in the B-Rank ranking. They were No. 4 in the A-Rank ranking, but were demoted to B-Rank due to Hatohara's defection. ; : :The captain of Ninomiya Squad and Border's No. 1 Shooter, who was a member of the original Azuma squad. He believes only people stronger than him are worthy of respect, but can respect those he considers weaker, such as Izumi, who he requested to mentor him despite being Border's No. 1 Shooter in the past. ; :A Gunner of Ninomiya Squad, who is smart and crafty and skilled at extracting information from people. ; :An Attacker of Ninomiya Squad, who is stoic and shy and struggles to talk to women, with the exception of his team's operator, Hiyami, who he got used to being around, and Hatohara, who was kind to him. ; : :Ninomiya Squad's former sniper, who wanted to be part of the Away Team to find her little brother. Her squad lost the right to join due to her being unable to shoot people despite being able to disarm them. She later teams up with civilians and gives them triggers in order to go to the Neighborhood, but vanishes afterards.
Kageura Squad is team No. 3 in the B-Rank ranking, and formerly No. 6 in the A-Rank ranking, but were demoted to B-Rank due to Kageura's violent behavior. ; : :The leader of the Kageura Squad, who caused it to be demoted to B-Rank due to his violent behavior. His side effect allows him to feel other's emotions and intentions as pinpricks; intense emotions to cause harm intensify the pinpricks. He forms a rivalry with Yūma following their match, and states that his side effect is useless against Yuma since he cannot detect anything from him. ; : :The Sniper of Kageura Squad, who befriends Chika and starts training her since he does not want her to have the same fate as his master, Mirai Hatohara, who he was fond of. He also dislikes Ninomiya Squad, which he states is a feeling shared by his team. He specifically hates Ninomiya, due to the way he treats Hatohara as a traitor. He later gains a crush on Chika and seeks to join the away team to protect her. ; : :The Gunner of Kageura Squad, who is laid-back and level-headed, even in the face of defeat. ; : :The Operator of Kageura Squad, who is carefree and spends much of her time relaxing at Border.
Ikoma Squad is team No. 4 in the B-Rank ranking. ; : :The No. 6 Attacker and captain of Ikoma Squad ; : :A Sniper and member of Ikoma Squad. ; : :A Shooter and member of Ikoma Squad. ; : :An Attacker and member of Ikoma Squad. ; : :The Operator of Ikoma Squad
Ōji Squad is team No. 5 in the B-Rank ranking. ; : :An Attacker and captain of Ōji Squad, who is confident and good at formulating strategies. He gives people nicknames which are usually anglicized forms of their names, such as calling Chika Amatori Amatoriciana. ; : :A Shooter and member of Ōji Squad. ; : :An Attacker and member of Ōji Squad. ; : :The operator of Ōji Squad.
Azuma Squad is team No. 6 in the B-Rank ranking. The squad has changed all its members except for Azuma himself at least twice prior to its present composition. ; : :The captain of Azuma Squad and the first Sniper in Border, who is skilled at tactics and deciding which gun to use depending on the situation. He trained Narasaka, Tōma and Reiji, among other snipers of Border, and tutored Ren Tsukimi in tactics. ; :An Attacker and member of the current generation of Azuma Squad. ; :An Attacker and a member of the current generation of Azuma Squad. ; :The operator for the current generation of Azuma Squad.
Yuba Squad is team No. 8 in the B-Rank ranking. ; :The No. 2 Gunner and captain of Yuba Squad ; :An All-Rounder and member of Yuba Squad. ; :A Sniper and member of Yuba Squad. ; :The Operator for Yuba Squad.
Other agents ; : :A 14 years old C-Rank Sniper who befriends Chika. ; : :A 16 years old S-Rank agent and Black Trigger user, who is said to be highly destructive in battle and dislikes fighting opponents he considers to be boring.
Kōda Squad are a trio of C-Rank agents who think very highly of themselves and believe that Arashiyama Squad has no real strength. As they are still C-Rank, they are not considered to be an official squad, as only A-Rank and B-Rank agents can form squads. ; : :The group's leader. A Shooter who uses Hound. ; : :A Shooter who uses Hound. ; : :An Attacker who uses Kogetsu. ==Civilians==