Kasumi Goto

Kasumi is a human thief mentioned in news reports on the Citadel and Illium. On the Citadel, she has reportedly stolen several priceless works of art, and on Illium she has stolen an omni-gel converter prototype. Kasumi is rumoured to be the second DLC character for Mass Effect 2.

Dossier: The Master Thief
Sabotage, infiltration, extraction, Property acquisition, stealth, agile combat.

"This subject has stolen extremely valuable resources from Cerberus in the past. Alarm systems, DNA encoders, guards, and various other deterrents were bypassed, and we don't know how. She was last seen on the Citadel."

Trivia

 * Using a hack, it is possible to make Kasumi selectable when choosing squadmates; however, she will only appear in the last mission. Selecting her at any other time will cause Shepard to only have one squadmate.