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THANATOS Series is the fourth Anti-Zombie weapon series in Counter-Strike Online and the fifth series that was developed by Aegis Institute. It was first introduced in December 2014 in South Korea, after the JANUS Series was completed.


The weapons of this series deal tremendous amount of damage to enemies with a new specialized technology, known as the Thanatos Blade System. Activating it is as simple as pressing the alt-fire key (with the exception on THANATOS-3) and can be done as many times as the user wishes once the current one is exhausted, with the downside being the long prepping time.

Similar to the JANUS Series, no new cartridges were built for the weapons, thus allowing weapons of their same caliber to share their ammunition pool.

So far, there are 6 weapons under the THANATOS Series:

Main article: THANATOS-1
A pistol developed by Aegis Institute based on the AutoMag V and fed with 7 rounds of .50AE. It is equipped with Thanatos Blade System which launches a special projectile that can explode upon hitting a target, reduces the movement speed and inflicts additional damage to the enemy.

Main article: THANATOS-3
A submachine gun developed by Aegis Institute based on the MP7A1 and fed with 60 rounds of 4.6×30mm. After firing a pre-determined number of rounds regardless of who it hits, the Thanatos Blade System will be unlocked to yield additional firepower through the generated blades.

Main article: THANATOS-5
An assault rifle that fed with 30 rounds of 5.56 NATO, developed by Aegis Institute based on the OICW. Using a special grenade, it inflicts damage upon explosion by launching a number of blades subjected under Thanatos Blade System and split into several bladestwice.

Main article: THANATOS-7
This is an anti-zombie machine gun fed with 120 rounds of 7.62 NATO. It is developed by the Aegis Institute and based on the MK48. It is equipped with the Thanatos Blade System which can launch a spinning blade and deal continuous damage to multiple targets inside the its radius.

Main article: THANATOS-9
This is a melee weapon developed by Aegis Institute in form of a scythe. It is incorporated with continuous separation technique that allows the user to perform a flurry of stabs whenever Thanatos Blade System is in use.

Main article: THANATOS-11
A pump-action shotgun developed by Aegis Institute based on the KSG-12 and fed with 15 rounds of 12 gauge. It is equipped with Thanatos Blade System which launches blades to the target, charging it up to create an explosion. The explosion splash also damage any enemy close to the victim.


  • In Greek mythology, Thanatos was the daemon personification of death. He was a minor figure, often referred to, but rarely appearing in person.
  • This is the second anti-zombie series that does not feature any unique ammunition capabilities, right after the JANUS Series.
  • The weapons in this series glow in the dark.

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