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.
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.
- Access cards
- Fire Extinguisher
Zombie Scenario Stats
|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.|
|Directed Bomb Support||Achieve 50 kills through directed bombing in Human Scenario mode.|
She has brown short hair and brown eyes
She wore a white lab coat, Blue shirt, Black skirt, A name tag, A pair of glasses, Two silver rings on her left and right index fingers respectively, And a pair of black high heels
- 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, new voice clips for this character were added, most likely voiced by a Korean voice actress.
- 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.