Girls' Frontline Setting Exploration: G&K Combat Forces


The primary force of G&K is Tactical Dolls (T-dolls). These forces consist of both purpose-made T-Dolls meant for PMC, police, or other armed work, and civilian Autonomous Dolls (A-dolls) converted to T-Dolls via installation of a Fire Control Core (FCC), an Imprint to a pre-WW3 weapon, and appropriate fire and posture control software. An FCC houses all combat related data and software and removal of the FCC effectively demilitarizes a Doll. 

T-Dolls are all physically superior to humans, boasting enhanced strength, speed, and cognitive processing. T-Dolls may be outfitted with many advantageous modules or technology such as night vision, infrared optics, ultrasound scanning, vibration detection, and heart beat sensors.

A T-Doll echelon within G&K can consist of anywhere between one and five T-Dolls. A Team Leader is designated by a Commander and a Vice Leader may be chosen by the lead T-Doll if desired. T-Dolls may request to switch teams if there are compatibility issues, but the final verdict lay with a Commander.

For operations with sensitive information, G&K may partially or completely erase the memories of the operation for the T-Dolls involved.

Additionally, A Doll typically has a 20-year service life. Upon reaching that period they will require a Neural Upgrade to renew themselves and have their service life extended. 

As of 2052, Dolls were equipped a contained slow release and discharge plasma power cell. This new safe battery extended continuous operation time from 20 hours to 150 hours before needing to be recharged.

Elite T-Dolls

T-Dolls can be designated as ‘Elite’ and the title is not clearly defined in-game. However, one thing is clear: their performance both in and out of combat exceeds other T-Dolls. They are the best the company has to offer.

  1. Welrod MkII
  2. FAL
  3. Five-SeveN
  4. M870
  5. M82A1
  6. PKP
  7. Negev
  8. WA2000
  9. Kar98k
  10. NTW-20
  11. DSR-50
  12. Thompson
  13. OTs-14
  14. SR-3MP
  15. T91
  16. Lee Enfield
  17. Carcano M91/38 (Grape/Purple)
  18. Carcano M1891 (Strawberry/Pink)
  19. Mosin-Nagant
  20. AK-Alfa
  21. M950A Calico
  22. Zas M21
  23. Vector
  24. MP7
  25. Type97
  26. AA-12
  27. Saiga-12

Known Elite T-Dolls of other affiliation:

  1. Anti-Rain Team (M4A1, M16A1, ST AR-15, M4 SOPMODII, RO635)
  2. M1887 (16Lab Custom)
  3. Task Force DEFY - The Wolf Pack of the NUSSR Bureau of State Security (AN-94, AK-15, AK-12, RPK-16)
  4. HK416 (404 Squad)
  5. Mona "SP9" & Rhino (GDR Ministry of State Security - Stasi)
  6. No. 9 "QBZ191" & QBU191 (Doll Mercenary & StateSec)

Command Module

A Command Module can be installed in experienced T-Dolls. This allows them to process battle conditions and devise combat plans at a higher efficiency, as well as directly issue orders to T-Dolls both within and outside of their designated echelon in the event of cut-off communications with the Field Commander. Due to the heavy processing load, not every T-doll is installed with this module, and it is only authorized in select operations.

Electronic Warfare Module

Many T-Dolls are capable of electronic warfare (EW) at a basic level, even if the Dolls were not originally built for the purpose of EW. However, hacking systems or counter-hacking intrusions incurs a heavy processing load and requires many simultaneous calculations to be carried out. This is where the presence of the EW module comes into play by providing processing and calculation assistance during electronic warfare.

Attempting to hack or being hacked beyond the limitations of a Doll's Digimind could potentially result in a physical burnout or permanent damage to sectors of the Digimind.

Imprint Technology

The Advanced Statistic Session Tool (ASST) is a creation born from research into Collapse Technology.  A T-Doll is able to form a special sensory bond with a specific weapon suitable to them through the use of Imprinting. A relationship akin to being part of their own body.

Operational efficiency and accuracy are greatly improved when a T-Doll is using their personal weapon. A T-Doll is constantly aware of their weapon's position within physical environments. That said, combat effectiveness can still be limited by physical reasons.

Part of the data package of the Imprint process includes historical data of the weapon as well as any relevant combat data such as Posture Control or Fire Control software. Some T-Dolls may be interested to research into the origins of their weapon further and attribute its history to their own. This information may also influence how a T-Doll acts beyond their preset personality programming and even how they dress themselves.

Zener Protocol

A wide area network communication protocol developed originally by 90Wish. It was later modified by 16Lab to be used in Doll operation network interfaces and it is the network protocol that all IOP Dolls now operate on.

The network is similar to peer-to-peer networks and enables Dolls to transmit messages without the assistance of a main server or satellite uplink. Dolls can relay orders between each other from a human Commander or new tactical battlefield information directly.

The Zener Protocol maximizes Dolls' activity efficiency and ensures security and stability of information. It is possible for teams of T-Dolls to operate autonomously to an extent if communication with a human Commander is unavailable. The efficiency and capability of an autonomous team will depend on the T-Doll with leadership authority.

Neural Cloud

The Neural Cloud enables T-Dolls to backup memory and combat records, allowing them to gain experience even if destroyed in combat. If a Doll's mainframe is destroyed, it can be re-manufactured and succeed the backed up memory.

Memory backups can not be done in real-time, require connection to the designated G&K server, is time consuming and limited by distance. Therefore, backups can only be done in non-combat situations at a Command Post. On-site backups can be done through manually written memos, portable storage disks, or compressed video and audio files within a T-Doll’s Digimind.

If a T-Doll is destroyed in combat, but their Core is still intact, it may be possible to recover memories even if a backup was not performed, provided the Core’s emergency power supply has not run out before retrieval.

A Doll's personality is determined by the "seed" planted in the base layer of the Neural Cloud. This "seed" acts as a baseline and is capable of growing over time based on personal experiences making memories the most valuable possession a Doll has. The more personal experience and memories a T-Doll is able to retain, the more effective they are, and the more they grow as an individual beyond their programming.

Dummy Links

T-Dolls can multiply their combat potential through the use of ‘Dummy Links’. This system enables T-Dolls to control Dolls known as ‘Dummies’ - Frames lacking in complex computational ability, but possessing the same combat ability as the ‘Mainframe’. Dummies are only able to receive and execute commands. A Dummy’s actions can be controlled in unison or in variance of the Mainframe and control can be transferred to another T-Doll’s authority on the spot.

Command Compliance

Any Doll, in general, must comply with any command given by a human. T-Dolls employed by G&K are also installed with additional programming to be loyal to the company. This may influence a T-Dolls behavior to rethink and cease behavior that may negatively affect the company directly or its image. Attempting to defy an order may result in Neural Cloud structural damage.

A recurring issue with this baseline programming of Dolls is that criminal elements have taken advantage of company T-Dolls on more than one occasion. G&K technicians are aware of the issue, and are working on a solution.

As part of a Doll's programming, they are unable to harm humans or allow a human to come to harm through their own actions. This programming can be altered and even removed by experienced technicians. If the programming is not removed, authorization must be provided by their Commanding Officer in order for the Doll(s) to harm human combatants. If authorization has not been provided, but Doll forces are experiencing hostile actions from humans, they may defend themselves with non-violent actions.

G&K Dolls in particular are outfitted with additional system protection that will even force a Doll to shut down, or render them unable to take action if they attempt to operate without authorization. An example of this is unauthorized use of Dummy Links.

While off-duty, G&K Dolls are free to live however they want on base provided they don't break any rules (and will be punished if they do). Yes, that means certain Dolls tend to act up and cause trouble when not on the job as a result. They can even leave the base's premise provided they receive permission beforehand and that too, can potentially lead to trouble.


Fairies are an old, abandoned 90Wish drone project revived and modified by Persica for G&K’s usage. She is responsible for developing the base AI and function of each drone, but the AI itself develops its own personality and personal image. They are developed with a command structure based on SF’s OGAS protocol network - a top-down tree shaped network.

Neural Upgrade

Otherwise known as Neural Cloud/Digimind Upgrade, these modifications are upgrades performed on a T-Doll to increase performance. A proposal must be made by anyone, even a Doll may submit a proposal for another Doll, and submit it to the Commander for approval.

What specifically gets upgraded differs for each Doll. T-Dolls may receive a brand new frame altogether, have adjustments made to their Neural Cloud to increase cognitive breadth and conversation logic, or receive adjustments and software to use new equipment.

In addition, a Doll's service life is around 20 years. At this time, it is advisable to receive a Neural Upgrade to revamp any outdated programming within which may begin to degrade or cause hindrances.

These modifications are a choice and can be declined unless vital to a T-Doll’s continued successful operation. The upgrades are not free and the payment comes out of a Doll’s personal funds. If a Doll is unhappy with their Neural Upgrade, any changes made can be reverted and returned to their previous version provided a full body replacement was not made, otherwise it is irreversible.

G&K may sponsor a modification if it is required in order to keep a T-Doll functioning properly or because their logic processing has proven to be insufficient.

Dolls & Human Behavior

Whether a Doll is a high-end model meant for paramilitary work, or a worker from the civilian sector, all Dolls within G&K are capable of reproducing human behaviors. Expressions, eye movement, stances, even habitual ticks are all programmed to be as human as possible in order to avoid the Uncanny Valley effect. These actions can be purely cosmetic, but may also serve a dual-purpose too.

Do Dolls breath?

Dolls do not need to breath to stay functional, however Dolls are capable of performing the action. This is often done to fit in with society, but in extreme situations, deep breaths or panting may be used to cool-off an overheating Doll.

Do Dolls need to eat?

Dolls do not need to eat to stay functional. Dolls run on an internal rechargeable battery, but the act of eating is one of those actions which serves a dual-purpose. Dolls are able to convert food to energy, however the conversion ratio is quite low. The output is enough to keep a Doll moving (without extraneous output) in the event of a low-battery situation.

A special energy paste is provided for Dolls as a supplemental source of energy for field operations. Dolls of G&K claim this paste is efficient, but does not taste very good. As a result, many of the Dolls prefer to cook or buy their own food for operations, even if it is less efficient.

Do Dolls bleed?

Yes, Dolls bleed a kind of synthetic blood. While it has not been confirmed yet, it is believed their fake blood serves the dual-purpose of acting as a liquid cooling measure in addition to their already-confirmed Thermal Dissipation system.

Heavy Ordnance Corps

Heavy Ordnance Corps (HOCs) are a new and highly illegal development made by Persica through research into Sangvis Ferri technology and investment from Havier, the CEO of IOP. HOCs are a team of T-Dolls imprinted to a single heavy weapon. Their new, and unique imprint technology enables them to function as a single cohesive unit while operating the platform.