Characters in Counter-Strike Online:
- Natasha - Russian army's top sniper
- Choi Ji Yoon - 707 Commander
- Criss - SAS top medic
- May - Chinese spy
- Keith Icahn - Famous zombie hunter
- Gerard - former SAS General
- Lucia - Garcia Fleet Marine Commander
- Enzo - Marine Soldier
- Natasha (casual) - Russian army's Top sniper (casual clothes)
- Alice (Limited Edition) - Alice in Maid dress disguise
- Walter - Aegis Institute's mercenary
- Choi Ji Yoon (Limited Edition) - 707 Commander (infiltration clothes)
- Isabelle - Former boxer
- Henry - Master craftsman
- Dominique - Escapee of Super Soldier Program that has interest in Alin
- Soy - Aegis Institute's researcher
- Ha Ly - Aegis Institute's scientist and combatant
- Dr. Han - Secret security agent of Aegis Institute
- Rebecca - Police officer
- Ian - Taiwanese Counter-Terrorist
- Commander Victor - Rescue team commander
- Dorothy Dark Knight - Member of a secret special group of superhumans
- Sonya Lycanthrope - Member of secret special group of superhumans
- Transcendent Choi Ji Yoon - 707 Commander (transcendent uniform)
- Lisa - CTU special agent
- Transcendent Fernando - Returned exorcist
- Special Agent Lucia - Garcia Fleet Marine Commander (Special ops uniform)
- Aetheris - Overseer agent
- Sheriff Gerard - Former SAS general (Sheriff outfit)
- Kal-El - Overseer's Guardian angel
- Lifeguard Dominique - Escapee of Super Soldier Program (Summer swimsuit)
- Black Rose Miho - Magical girl
- Jack the Ripper Henry - Master craftsman (Halloween costume)
- Yeong Shin - Joseon landing army member
- Jennifer - Journalist turned experiment subject
- Ritsuka - Red Army member
- Yuri - Bomb expert
- Erika - Lost City survivor
- Spade - Hired gun
- David Black - SAS defector
- Michaela - Pirate captain
- Raven - Pirate crew member
- Jennifer (Uniform) - Journalist turned experiment subject (Uniform)
- Yuri (Limited Edition) - Bomb expert (School uniform)
- Carlito - Best among Veteran members in Vanguard troops
- Michaela (Limited Edition) - Pirate captain (Casual outfit)
- Ling Ling - Mystical idol star
- Gunsmith - Creative craftswoman
- Alin - Adept B-girl
- Jim - Leader of Red Lizard Mercenaries
- Krieg - Former spy
- Jenny - Master of dark negotiation
- Ace - Thief
- Yuwei - Taiwanese Terrorist
- Flora Paladin - A member of a secret special group of superhumans
- Elizabeth Crimson Hunter - Member of secret special group of superhumans
- Transcendent Yuri - Bomb expert (transcendent uniform)
- Transcendent Michaela - Pirate captain (transcendent uniform)
- Mila - Elite crew's top sniper
- Transcendent Blair - Returned zombie hunter
- Rose Phoenix - Special party leader
- Pirate Michaela - Pirate captain (pirate outift)
- Axion - Overseer agent
- Outlaw David - SAS defector (Wild West outlaw outfit)
- Medea - Overseer witch
- Vacation Alin - Adept B-girl (Swimsuit)
- Pink Heart Shiho - Magical girl
- Ghost Bride Ritsuka - Red Army member (Halloween costume)
- Lee Chang - Joseon crown prince
Characters in Counter-Strike Online 2:
- Ryan - SAS Operator
- Jean Pierre - GIGN Operator
- Lisa - Navy SEAL's Elite Force member
- Michael - CTV agent
- Choi Ji Yoon - 707 Commander
- Lincoln - CTU Director
- Marie - Police officer
- Kim Dae-Ho - 707 Commander
- Emma - Chairman of the William Cultural Foundation
- Carrie - CTU's Private Think tank Consultant
- Heather - Unofficial Admiral of the French Navy
- Miyu
- GSG-9
- Helga - Spetsnaz Operator
- Kenji - SAT Operator
- Leet - Elite Crew veteran
- Ain Berg - Ex Artic Avengers
- Mila - Red Muffler Avenger
- Kara Chenko - Black market dealer
- Yuri - Bomb expert
- Mao - Silent assassin
- Natalie - Mercenary
- Kaze - Right hand of Red Army's leader
- Tammy - Avant-garde artist
- Viper - A-class hitman
- Sonya - Former KGB and CIA double spy
- Athena
- Phoenix Connexion
- Naomi - Unidentified terrorist group member
- Joe - Yakuza member
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