On first sight Kasumi Goto from Mass Effect 2 and 3 reminded me at a Jedi Knight from the Star Wars Universe, but she is almost the opposite of that with her being a thief known in the whole galaxy and having enemies everywhere.

Kasumi made her debut in a ME 2 DLC and becomes a very useful ally later in Mass Effect 3 too.

Kasumi Goto Mass Effect

Selected Fan Art of Kasumi Goto, featured on Game Art HQ;

Kasumi Goto Portrait by_ruthie hammerschlag

Kasumi Goto Portrait Art