Arima Squad

Arima Squad (有馬班, Arima-han) is the squad under the lead of Kishou Arima.

During the Owl Suppression Operation and Rushima Invasion, it acted under the name Squad 0 (0番隊, Zero-ban-tai). It was tasked with eliminating any ghouls fleeing through the underground tunnels and defeating the One-Eyed Owl in the case that it penetrated from underground. It made its first appearance before the final battle against the real One-Eyed-Owl at the end of the Anteiku Raid.

The squad would later appear during the Auction mopping-up operation as part of the S3 Squad (S3班, Esu-san-han).

Members
Kishou Arima, Koori Ui and six unnamed, hooded investigators, whose faces were concealed, participated during the Owl Suppression Operation under Arima's leadership. In re, Arima suppressed Shachi with two unnamed members, and Arima and several other unnamed, hooded investigators defended Cochlea.

Squad Leader

 * Kishou Arima (Deceased)

Members

 * Koori Ui - Assistant Squad Leader (transferred to S1 Squad from re chapter 34)
 * Hairu Ihei (transferred to S1 Squad from re chapter 34, Deceased)
 * Haise Sasaki (temporarily between the end of Tokyo Ghoul and the start of :re, then once again as secretary as of re chapter 60, Defected)
 * Take Hirako (transferred from Hirako Squad after re chapter 34)
 * Akira Mado (prior to Chapter 80)
 * 5 unnamed members

Plot
Squad 0 had split up individually to assist the other squads during the Anteiku Raid battle and convened when Arima made his second appearance in front of the real One-Eyed-Owl. Although appearing directly behind him upon their arrival, Squad 0 remained in the background and did not participate in the fight that ensued after. One of the members did come to Koori Ui to help him up addressing him as 'Senpai'. After Arima had dealt a powerful blow to the One-Eyed-Owl, Squad 0 can be seen readied, standing side-by-side with what can be assumed as six identical Quinques taking the form of some sword or sharp weapon.

The squad makes a reappearance during the final moments of the Auction mopping-up operation, assisting in securing the building and rescuing Haise Sasaki. The six hooded members of the team surrounded a wounded Hinami Fueguchi, capturing her and preparing to let their leader finish her off. Sasaki was able to persuade Arima to spare her, and the team departed with him to handle other matters.

Arima hunts Shachi with several unnamed squad members. Some of them are killed, but Arima defeats Shachi.

Arima Squad are assigned to defend Cochlea during the Third Cochlea Raid and engage Ayato Kirishima, Touka Kirishima and Renji Yomo in combat, during which several members are killed. They appear to wield a quinque similar in design to IXA.



During the Third Cochlea Raid, Take Hirako and the rest of Squad 0 come across Haise Sasaki over Arima's dead body. Take Hirako calls out to Sasaki, but calls him Ken Kaneki and reassures him that they are there to help him. While the younger members mourn their fallen leader, Hirako explains that they were ordered by Arima to help Sasaki escape from Cochlea.

Trivia

 * Koori Ui, Take Hirako, and Akira Mado are the only members known to have been fully human. All other members are either Half-humans or One-eyed ghouls.