Counter Strike Online Wiki

SymbolVenom Guard is a male zombie introduced in the Z-VIRUS patch.


The security guards working in an unidentified illegal research complex were transformed by Z-Virus. The body is filled with toxic substances under the influence of chemical waste. It has the ability to cure the body and heal wounds.


Using Venom Guard[]

  • Use Hardening and Healing Skill when you are running out of health or when humans are using Deadly Shot ability as you can't get killed by a headshot when the Hardening effect is still on.
  • In Zombie: The Union and Zombie Scenario when a Venom Guard dies its explosion will damage nearby enemies, making humans most likely to die if not from the explosion it might be from the fall.
  • If player is on the verge of death, try to get as close as possible to human players since the explosion can harm and give human players several seconds of shock, which gives more time to teammates to infect the humans.

Engaging Venom Guard[]

  • Fight Venom Guard with weapons which have high stun power, since they have a very high knockback resistance.
  • Use Venom Guard's big body as an advantage because it has big hitbox.
  • Don't ever try to kill Venom Guard at close range and always engage this zombie in a safe range as the shockwave may knock the player off the safe position or at human camps and gives the other zombies time to attack the player.
  • It is not recommended to engage them with melee weapons since they explode upon dying which harms and possibly kills nearby players.


Icon Name Description
Zombieskill zombiselfdestruct Self-destruct You cannot attack enemies directly for 5 seconds, and your armor is reduced by 50%, but you are in a congestion state and your movement speed increases and your stiffness level drops. If you collide with an enemy within the skill's hold time, it immediately explodes and damages the enemy.
Zombieskill armorrecovery Armor Recovery Restores armor to 500 / 1,000 / 2,000. The amount of recovery increases as the evolutionary stage increases, and the maximum amount of armor can not be exceeded.


Residentzombi gfx

This zombie was released alongside Sting Finger, Forbidden and Z-VIRUS pacth on:

  • South Korea: 28 June 2012 alongside M32 MGL and Big Tree.
  • Taiwan/Hong Kong: 4 July 2012 alongside M32 MGL and Big Tree.
  • China/Japan: 4 July 2012 alongside M32 MGL and Big Tree.
  • Indonesia: 1 May 2013 alongside Tomahawk, Dragon Tail and Thompson Gold.
  • Singapore/Malaysia: 22 May 2013 alongside M32 MGL.

This zombie was released as AI-controlled on:

This zombie was released alongside Free Update on:

  • CSN:Z: 8 January 2015.
  • Vietnam: 26 March 2015.


Skill Icon Description
Healing Healing Rapidly replenish its HP by an amount of percentage for each usage. Only can be used when its HP is lower than 50%.
Hardening Hardening Harden the body by increasing armor to reduce the damage from bullets, also not allowing getting a headshot for a short period of time.







Using skill




Zombieskill healing

Old Healing skill

  • The code name in game files is boomerzb which refers to the Boomer from Left 4 Dead. Its behavior is similar to Boomer's, which is exploding upon death.
  • The view model is the combination of Heavy Zombie's skin texture and Regular zombie's animations.
  • In Zombie Mode, the body will be upright after death and doesn't explode if killed due to headshot.
  • While the Hardening skill is active, you will be unable to use Healing.
  • In Zombie: The Union both of its skills delay is 30 seconds, while in Zombie Mods the delay will be 240 seconds.
    • This zombie is very hard to kill due to fast skill cooldown and replenish full hp at a glance.
  • Despite its size, this zombie ironically runs faster than the Regular Zombie. However, he got the lowest jump above all.
  • Before the Zombie Mode Rework patch, Venom Guard used to have another Healing skill that allowed it to heal anytime. It was replaced with the current one for game balanced purpose.
  • After Revive Update in 2018, both Zombie Grenade type and Venom Guard explosion can damage and kill Humans except Zombie 1: Original and Zombie 2: Mutation.