Counter Strike Online Wiki

Dione is a non-player character in Zombie Scenario: Season 2. It appears in Toxicity, Culvert and Decoy chapters.


After being defeated in Toxicity, the reptilian boss Dione escaped successfully. In Culvert, from round 4 to 8, Dione will attack the players. Then it evolved to Siege Type Dione at round 9. It also appeared in round 3 of Poisoning and in Collapse.

Later, Dione becomes a playable character for Zombie team which can be controlled through third-person-view in Zombie Giant mode.

Fighting Dione[]

Unlike previous bosses, Dione's moves can easily be spotted and dodged if a player clearly understands its motions. Senior Researcher Soy also tells the players Dione's next attack. During the early battles, Dione's attacks are less damaging and are of nearer range. However as its health continues to deplete, its attacks will be more deadly and widespread. Players will have to observe that:

  • When Dione starts pounding on the ground, black spots will appear on the ground nearby, resulting in tentacles protruding from them sooner. Players that are caught will be tossed upwards, losing health from both the tentacle and fall damage.
  • Dione has two types of pounding attacks, one of it is once he stab the ground his tentacle will instantly appear from the ground and damaging player's if they are on top of it. As for the second type, when Dione stab the ground 7 times (two stabs = 1) his tentacle will not instantly appear but will cover a large area. In the mean time, find a spot to avoid the tentacles.
  • Whenever Dione uses one of its pounding attacks, players are able to avoid the tentacles by crouching (hold ctrl) and moving either front or backward. However, you must be aware of surrounding zombies, as they would block your path.
  • When Dione starts swaying its head and moaning, there's a 3-4 seconds leeway to take cover, preferably after 180 degrees from its line of sight. After that, it will spew out a far range wave of toxic which will damage or kill players if they failed to take cover.
  • Dione's weakness is located at the chest spot (and probably the head). Shooting other parts will only chip off its life bar.
  • Dione has the ability to curl up and roll to another spot, often dealing high damage or even killing players in most cases if they're in the way. Try not to attack with melee, especially when its health drops below half.
  • Dione's circular motion swipe has a chance to disarm players' weapons if they're within its radius.
  • With correct timing, it is possible to avoid Dione's poison by jumping.

Zombie Giant[]

Tooltip zombiegiant 052

In Zombie Giant, Dione is accessible as one of the playable zombies, all his skills is accessible, and new dying animation is also created because the Zombie Scenario version doesn't have it since Dione escaped after defeated.

Unlike Revenant and Fallen Titan which gain a new skin upon evolving, Dione simply turns into Siege Type Dione after evolving, and gains access to his fourth skill, which can summon an Angra to support in battle.

Skill Table[]

Icon Skill
Zg skill dione01 on Rolling
Zg skill dione02 on Poison
Zg skill dione03 on Tentacle
Zg skill dione04 on Summon Angra (Evolution Skill)

Minimal Weapons Required[]

Skull5 M249ex gfx M134 gfx Salamander Skull3


Honor mission[]

Title Description Task
A medal given to a person who has braved dangers of terrible venom and tentacle attacks to conquer Dione
[Dione Pursuer]
Gentleman, forget about all of your field knowledge and any pursuit methods you know! These knowledge would be useless against a mysterious wildlife creature. Rely on your six senses should you hope to achieve a victory! This is available in Pursuit: Toxicity. This is only available in rooms with 4 players and above, easy stage is not included. Defeat Dione for 100 times.



  • Dione is named after the Greek Goddess (Greek mythology). It may also be named after the Saturn's icy moon.
  • If the player stands in the spot where Dione lands, the player will get crushed.
  • This is the first boss that did not die after his health is depleted completely. Dione was just wounded and he escaped successfully to evolve. The second one is Tesla in Counter-Strike Online 2.