Margaret Denise Quigley

An American who went to Japan and then to Hong Kong to became a supermodel, Maggie Q caught the eyes of HK movie producers who cast her despite the fact that she didn't speak any Chinese at the time! (She's since learned both Cantonese and Mandarin.)
She still models, but tv and films are now her priority. In fact, she's starring in a new tv series; Nikita!
Most of her film roles are action-oriented, but she's also performed in romances, dramas, and comedies.
Maggie is a spokesperson for PETA in Asia.

Genre appearances include...
Young Justice (Wonder Woman)
Priest (Priestess)
Nikita (Nikita)
King of Fighters (Mai Shiranui)
Warrior & the Wolf (Harran Woman)
Operation: EndGame aka Rogue's Gallery (High Priestess)
Need for Speed: Undercover[VG] (Chase Linh)
Deception (Tina)
Three Kingdoms: Resurrection of the Dragon (Cao Ying)
Balls of Fury (Maggie)
Live Free or Die Hard (Mai)
Mission: Impossible III (Zhen)
Dragon Heat aka Dragon Squad (Yuet)
Around the World in 80 Days[2004] (Female Agent)
Naked Weapon (Charlene Ching)
Rush Hour 2 (Girl in Car)
Manhattan Midnight (Susan & Hope [twin sisters])
Gen-Y Cops (Jane Quigley)
Model from Hell (Anna)

Check out...
the FanSite aMazingly uniQue
The Maggie Q Information Resource, another FanSite
A FaceBook FanPage (not official)
PETA Asia's Maggie Q Page

Other actresses to play Nikita include:

Peta Wilson in La Femme Nikita (tv)

Bridget Fonda in Point of No Return

Anne Parillaud in La Femme Nikita

Other Actresses to play Mai Shiranui include...
Sarah Sawatsky (English) & Kotono Mitsuishi (Japanese) in Fatal Fury: the Motion Picture / Fatal Fury 2
Akoya Sogi in literally all the video games!