Blake Hargrove is the daughter of Agency Director Gabriel Logan and former operative Addison Hargrove.
Syphon Filter: Dark Mirror
She was born twelve years prior to the Dark Mirror incident, which prompted her mother to leave the Agency while pregnant. While living as an ordinary citizen, Blake went with Addison to Peru for her career in security with the KemSynth corporation. Addison tried to find a school for her, but her daughter was captured by Red Section in an effort to extort data on the project. Gabe and Addison almost completed the trade with Touchstone, but he betrayed them and had Blake taken to Red Section's headquarters. It was left to Gabe and Lian to handle the rescue, and when it succeeded, Blake was allowed to enter hiding with Addison.