Soi with AutoMag V in Rising
CostSouth Korea
8600 Cash (Permanent)

90,000 MI-Cash (Permanent)

LocationAegis Institute, Zombie Scenario: Season 2, Zombie File, Zombie Scenario: Season 5
RaceResearcher of Aegis Institute
FactionCt icon
Health and Abilities
Signature SecondaryDeautomag
Date addedSouth Korea
22 January 2015

12 February 2015

Taiwan/Hong Kong
24 February 2015

25 February 2015

24 June 2015

23 March 2016

System namedoctora
For her Terrorist counterpart, see Jim.

Soi or Soy (in some regions) is a female Counter-Terrorist character in Counter-Strike Online.


Researcher Soi appears as an NPC of many missions in Mission tab. After completing her missions, players can choose the rewards.

In Zombie Scenario, she requests from the players the clues from each Scenario map and gives Dr. A's Trunks as a reward. She is also the main guiding NPC in all chapters of Zombie Scenario: Season 2 (including extra map - Poisoning) and Season 5 (since Memories).

In Zombie File, the players will take role of her to discover the secrets behind Zombie Scenario.

Barracks description

A senior researcher who founds Aegis Institute to fight the zombies. She has excellent weapon capability and has a history of participating in the Dr. Rex Super Soldier Program for her PhD Research Project.

Favorite weapons

Crowbar Bhdagger Hammer

Busp45 Icon anaconda cso Deserteagle Deautomag

Icon m3 cso M4 icon

Mp5 P90

Sg552 gfx Aug gfx M4a1 icon

Awp G3sg1 icon

Icon m249 cso

Zombie Scenario Stats


Missions appointed

Special mission

Title Task
Zombie Original Hunt zombies Kill 10 zombies in the given map in one day period. Only counted in room with 4 players and more.
Zombie Mutation Hunt zombies Kill 10 zombies in the given map in one day period. Only counted in room with 4 players and more.
Zombie Hero Zombies Hunt Kill 5 zombies with headshot in the given map in one day period. Only counted in room with 4 players and more.

Daily mission

Title Task
Directed Bomb Support Achieve 50 kills through directed bombing in Human Scenario mode.


New Characters - Soy & Jim

New Characters - Soy & Jim


  • Soi is a senior researcher in Aegis Institute about the zombie virus outbreak.
  • She is the second NPC to become a playable character after Henry Stoner.
  • Also, she's the first character to be playable before her model was officially released. Before her character was sold in the shop, she was only playable in Zombie File as the default character to discover the secrets.
  • Some voices used for her in Zombie File are taken from a Japanese girl in Counter-Strike: Condition Zero Deleted Scenes. However, there are some new sounds added, probably are voiced by a Korean.
  • According to the game files, Researcher Soi uses doctora entity which refers to Dr. A or Dr. Aegis.
  • In Taiwan/Hong Kong version, she is named as Mariko (麻里子).
  • Unlike other NPCs, that only has 1 message picture shown in Zombie Scenario, she has many message pictures, each depends on her emotion.

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