Tricia Janine Helfer (born April 11, 1974) is a Canadian actress and former model, best known for her role as Number Six in the re-imagined Battlestar Galactica miniseries and television series, her role as "Carla" on Burn Notice, Dark Blue as FBI Special Agent Alex Rice and for hosting the first season of Canada's Next Top Model.
She has been actively involved in different charity events, from animal rescue to the oil spill in the Gulf.
Helfer was born and raised in the rural community of Donalda in Stettler County, Alberta. She was raised on her family's grain farm. She was discovered by modeling agency scout Kelly Streit at age 17 while standing in line at a local movie theatre. She is of German, English, Swedish and Norwegian descent
She has played several prominent video game roles in recent years; including Kilian Quatar in Command & Conquer 3: Tiberium Wars, Veronica Dare in Halo 3: ODST and EDI, the ship-borne artificial intelligence aboard the Normandy SR-2 in Mass Effect 2. She also voices Sarah Kerrigan in StarCraft II: Wings of Liberty, as well as its expansion sets, Heart of the Swarm and Legacy of the Void. Helfer plays the voice of Black Cat in The Spectacular Spider-Man. She reprises her role as Black Cat in Spider-Man: Web of Shadows.
Helfer has joined the cast of Jerry Bruckheimer’s TNT drama, Dark Blue as FBI Special Agent Alex Rice. The show was cancelled in November 2010 because of its very low ratings 
In October 2010, she made a guest appearance on Lie to Me.
In 2011, she starred in The Black Keys' music video for "Howlin' for You.
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Tricia Helfer - Kiehl's LifeRide for amfAR Block Party