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OTs-12 Story Quotes
Gun Information
Full name OTs-12 Tiss
Country of origin Russian Federation
Manufacturer TsKIB SOO
Game Information
Faction Griffin & Kryuger
Manufactured /
Revised by
Voice actor Uchiyama Yumi
Artist 林檎爱す
Released on CN, TW, KR, EN, JP
Chibi Animation

Click the marked area to switch between animations. For details regarding animations, please see Animations on the Wiki.

How to obtain[edit]

NORMALHEAVY Timer 3:10:00. See T-Doll Production for details.

DROP Can be obtained from many battle stages from Chapter 5-5 onward.

REWARD Obtained as a career quest reward for clearing 1-6. This AR OTs-12Thumb button.pngOTs-12  will be Lv.15 and at 2x Dummy Links.

Exclusive Equipment[edit]

Stats / Data[edit]

53(x1)105(x1) / 525(x5) 20(x1) / 60(x5) 20(x1) / 60(x5)
15 42
7 54
7 54
Rate of Fire
 Rate of Fire
48 72
Movement Speed
 Move Speed
Critical Hit Rate
 Crit. Rate
Critical Hit Damage
 Crit. Damage
Armor Penetration
 Armor Pen.
Icon slot Accessory.png Icon Telescopic Sight S 2star.png Icon Holographic Sight S 2star.png
Icon Red Dot Sight S 2star.png Icon Night Combat Equipment S 2star.png
Icon Silencer S 2star.png
Icon slot Magazine.png Icon Armor-Piercing Ammo S 2star.png Icon HP Ammo S 2star.png
Icon Shotgun Ammo S 2star.png
Icon High-Velocity Ammo S 2star.png
Icon slot Doll.png Icon Microchip S 2star.png Icon Exoskeleton S 2star.png
Icon Ballistic Plate S 2star.png Icon Camo Cape S 2star.png
Icon Ammo Box S 2star.png

Affects submachine guns
Increases rate of fire by 20%
Increases damage by 15%

Weapon Background[edit]

The OTs-12 'Tiss' (ОЦ-12 Тисс, or "Yew Tree") was an experimental carbine developed in the early 1990s by TsKIB COO in Russia.

The OTs-12 is essentially a remodeled AKS-74U designed to chamber the 9x39mm sub-sonic round. When compared to the AKS-74U, the OTs-12 differs only in the bolt, barrel, muzzle-brake, and magazine, with every other feature being practically identical. It features a gas-operated rotating bolt, a right-side charging handle, and a magazine release behind the well just like all Kalashnikov derivative firearms. The 'Tiss' is fed with a specially-designed 20-round box magazine, and is able to achieve a rate of fire of 800 rounds per minute. The 20-round box magazine was designed so that it would be compatible with standard current-issue ammo pouches. A larger 25-round magazine was planned before the OTs-12 project's cancellation.

Being built based on the AKS-74U chassis, all the accessories available to the 74U are compatible with the 'Tiss'. In addition, Warsaw Pact/Soviet Union-issue accessories items such as clamp-mounts for optics and even the BS-1 30mm suppressed grenade launcher are compatible.

In 1993, a few hundred OTs-12 carbines were built and delivered to the Russian Internal Troops for evaluation. The weapon trial was less a demonstration of the OTs-12 itself, but rather a demonstration of the 9x39mm cartridge, and its effectiveness in close-quarter urban combat compared to the standard 5.45x39mm M74 ammo. OTs-12 production would be cancelled later that year due to a lack of interest in the weapon itself, though it performed excellently during the trial and was cheaper to produce than the more specialized AS Val. At the time of the OTs-12's debut, there were just too many other weapons using the 9×39mm caliber round, such as 9A-91 and SR-3 Vikhr. These weapons were more compact and weighed less than a default AKS-74U chassis, and performed just as well. With the 'Tiss' project abandoned, TsKIB COO started to work on the OTs-12's successor: the OTs-14 'Groza'.[1]


As an experimental firearm, Tiss (as she is sometimes referred to in the community) was produced in small quantities and very rarely used. The hearing protection headset and plastic goggles she is wearing suggests that she was a laboratory project, meaning the T-Doll was likely designed with this concept in mind. Though the produced batch of OTs-12 rifles did not undergo destruction and are actually in service with the Russian police.[2]

Using the weapon as a comparison, Tiss' body height is probably around 140 to 150cm. Despite being a product made after the dissolution of the Soviet Union, the character design of Tiss still incorporates many Soviet symbols, such as the Hammer and Sickle imprint on her thigh high socks/stockings, the Hammer and Sickle badge on her collar and beret, the star-shaped imprint on her tie, and various star-shaped hair ornaments.


Main artwork

Gallery consisting of artworks used primarily in-game.

Alternative artwork

Alternate gallery consisting of artworks with slight alterations as well as miscellaneous artworks.