Characters in Counter-Strike Online:
- Natasha - Spetsnaz 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) - Spetsnaz top sniper (casual clothes)
- Alice (Limited Edition) - Alice in Maid Dress
- Walter - Aegis Institute Mercenary
- Choi Ji Yoon (Limited Edition) - 707 Commander (infiltration outfit)
- Isabelle - Former boxer
- Henry - Master craftsman
- Dominique - Escapee of Super Soldier Program that has interest in Alin
- Soy - Aegis Institute Researcher
- Ha Ly - Aegis Institute Scientist and Agent
- Dr. Han - Aegis Institute Security Agent
- Rebecca - Police Officer
- Ian - Undercover SOZO Operator
- 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 (Spec 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)
- Cyborg - Cybernetically-enhanced human
- Yeong Shin - Joseon landing army member
- Drill Instructor Gerard - Former SAS General (Drill Instructor)
- Special Agent Criss - A SAS member with excellent shooting skills
- Leader Soi - Leader of the Aegis Institute
- Jennifer - Journalist turned experiment subject
- Ritsuka - Red Army Member
- Yuri - Elite Crew 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 - Vanguard Company Mercenary
- Michaela (Limited Edition) - Pirate captain (Casual outfit)
- Ling Ling - Mystical idol star
- Gunsmith - 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 - Elite Crew Bomb Expert (Transcendent uniform)
- Transcendent Michaela - Pirate Captain (Transcendent uniform)
- Mila - Elite Crew 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)
- Queen - The head of Queen Mercenary
- Lee Chang - Joseon Crown Prince
- Private Erica - Lost City Survivor (Private costume)
- Boss David Black - The living Legend of SAS
- Super Soldier Jennifer - A former reporter
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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