Non-playable character

There are some characters that are not roled by the players. The list below shows the non-playable characters in Counter-Strike Online.

Missions
Daily mission=

Weekly mission=
 * Senior Researcher Soy or Doctor Aegis: A researcher of developing new weapons and research about the zombie viruses.
 * Evelyn: An unidentified female character.
 * Signalman Felix: A signalman of government.
 * Douglas Jacob: Head of a Terrorist group.
 * Commander Victor: A captain of an American troop.
 * Red Lizard Jim: Header of a PMC (Private Military Contractors). Can be seen in Blaze and Sidewinder missions.
 * Rowen: A support classes captain of an unknown special forces.
 * Chen: The Secretary for Security of an unknown country.

Troops, Zombies and Bosses
Zombies= Vanguard Troops= Zombie Scenario 1 Bosses= Zombie Scenario 2 Bosses= Zombie Scenario Season 3 Bosses= Zombie Scenario Season 4 Bosses= Human Scenario Bosses=
 * Pierrot: A weak, no harm zombie appeared in Bonus Rounds.
 * Juggernaut: Evolved version of Heavy Zombie appeared as a mini-boss.
 * Hound zombie: A stray guard dog which was infected by zombie virus.
 * Deimos: Appeared as a mini-boss.
 * Metus/Ganymede: Evolution from Deimos. Appeared as a mini-boss.
 * Trooper: The most common Vanguard troop appeared in all maps.
 * Titan: Heavily-armored minigunner.
 * Ghost: Desert-camouflaged sniper of Vanguard troop.
 * Lancer: Specialized rocket launcher of Vanguard troop.
 * Heavy Titan: The chief commander of Vanguard troop.
 * Drone: Only appears in Blaze and assists Osprey in attacking the players.
 * Prototype Phobos: A boss appears in Last Clue. The players must defeat him to get Phobos' DNA.
 * Siege Type Phobos: A boss appears in Chaos. The players must defeat him to get Siege Type's Blood.
 * Oberon: A boss appears in Dead End. The players must defeat him to get either Siege-type's DNA or Siege-type's Frame.
 * Dione: A boss that appears in Toxicity and in Culvert as Siege Type Dione.
 * Revenant: A boss that appears in Decoy.
 * Angra: A powerful boss that appears in Angra Nest.
 * Mutated Heavy Titan: An infected Heavy Titan appeared in Contact.
 * Bio Scorpion: A mechanic scorpion that appears in Behind.
 * Mad Machine: A boss that appears in Threat and Panic Room.
 * Kraken: A boss that appear in Panic Room.
 * Frozen Terror: An infected Beast appeared in Encounter.
 * Gluttony: A fat, dragon-like boss appeared in Conspiracy.
 * Neid and Zavist: Two mutated females clones appeared in Envymask.
 * RAH-66 Comanche: A boss appears in Desert Storm and Hellfire to engage the players. In Sidewinder, it becomes the players' ally.
 * V-22 Osprey: A boss appears in Blaze.
 * XT-300 Goliath: A boss appears in Sidewinder.

Scenario guide
Zombie Scenario 1= Zombie Scenario 2= Zombie Scenario 3= Zombie Scenario 4= Zombie Escape= Human Scenario= Zombie Shelter=
 * Choijiyoon: Appeared to support the player in Chaos.
 * Senior Researcher Soy or Doctor Aegis: A researcher of developing new weapons and research about the zombie viruses, appeared to support the player in Toxicity, Culvert, Decoy, and Angra Nest.
 * Norman: Zim's most trusted person, appeared in Contact.
 * David Black: An AFC member, appeared in Behind and Threat.
 * Erica: An AFC member, appeared in Behind and Threat.
 * Gerard: Appeared in Encounter and Conspiracy to support the player.
 * Red Lizard Jim: Header of a PMC (Private Military Contractors). Appeared to support the player in Encounter, Conspiracy and Envymask.
 * Unknown NPC: Appeared to support the player in Conspiracy and Envymask.
 * Dr.Rex : Appeared in Envymask as antagonist character.
 * Unknown NPC (Gerard): A member of Counter-Terrorist, appeared to guide survival troop escaping from zombies in Hitchhiking.
 * Red Lizard Jim: Header of a PMC (Private Military Contractors). Appeared to guide survival troop escaping from zombies in Hitchhiking.
 * Victor: A commanding officer, appeared to support player in Desert Storm, Hellfire, and Sidewinder.
 * Red Lizard Jim: A leader of multinational mercenary 'Red Lizard', Jim. Appeared to support player in Blaze and Sidewinder.
 * Felix: A signalman of government. Appeared to suport player in City of Damned, Dead City, and Desert Plant.

Events

 * Mosquito - Insect appears in Zombie modes during summer to be killed for great prizes.
 * Kite - A flying 'monster' that appears during Lunar New Year.