Characters in Counter-Strike Online:
- Natasha - Top sniper
- Choi Ji Yoon - 707 Commander
- Criss - SAS top medic
- May - Chinese spy
- Keith Icahn - Famous zombie hunter
- Gerard - SAS general
- Lucia - Marine commander
- Enzo - Marine soldier
- Natasha (casual) - Top sniper (casual clothes)
- Alice (Limited Edition) - Alice in Maid dress disguise
- Walter - Aegis Institute's mercenary
- Choi Ji Yoon (Limited Edition) - Choi Ji Yoon wearing clothes she used for infiltration
- Isabelle - A former boxer
- Henry - A master craftsman
- Jennifer - Experiment sample
- Ritsuka - Reborn of Athena
- Yuri - Bomb expert
- Erika - Japanese high school student
- Spade - Zombie terminator
- David Black - SAS traitor
- Michaela - Pirate captain
- Raven - Pirate member
- Jennifer (Uniform) - Experiment sample (army clothes)
- Yuri (Limited Edition) - Yuri in school uniform disguise
- Carlito - Best among Veteran members in Vanguard troop
- Michaela (Limited Edition) - Michaela in casual clothes
- Ling Ling - A mystical idol star
- Gunsmith - A creative craftswoman
- Alin - An adept B-girl
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