- "Counter-Terrorism expert, and member of the 'White Tiger' 707th Special Mission Group of the Republic of Korea Army Special Warfare Command. Song is an expert in SCUBA and air-assist operations."
- — In-game biography
Kwan Song is a Mil-Sim operator for the NATO faction featured in Call of Duty: Black Ops Cold War. She is unlocked by default, and is playable in Multiplayer and Zombies modes within Call of Duty: Black Ops Cold War, as well as in Call of Duty: Warzone. 
|Name||Rarity||Image||How to obtain|
|Itaewon||Base||Unlocked by default|
|Encroachment||Rare||Battle Pass Season Three Tier 40|
|Northern Limit Line||Rare||Operator Mission|
|Sand Storm||Rare||Operator Mission|
|Key Reslove||Rare||Battle Pass Season Two Tier 90|
|Foresight||Epic||Bundle Mortal Wounds|
- Song's blood type is A+.
- Song originally had a US flag patch on her right shoulder in the alpha.
- This was replaced with the South Korean flag patch in the beta.
- Song's Key Resolve Skin is a reference to the joint war game that the US and South Korea engaged in.