An Asian woman working for the Blackdoor Group, though not for Jason Sterling. She works instead for another door. She is running with Oberlin St. Clair to Tibet.

Mai Lee's father, Dr. Tang Sui (spelling?), left her and her mother as his Section 9 priorities grew in dimension and number. As an act of betrayal, her mother led her to the US, where she led a normal life.

Mai Lee works in Door 3 of the Blackdoor Group.