[Canada]

Tricia Janine Helfer (born April 11, 1974) is a Canadian actress, voice actress and former model. She is best known for playing the Cylon model Number Six in Ronald D. Moore's re-imagined Battlestar Galactica series (2004–2009) and voicing Sarah Kerrigan in StarCraft II and its expansion packs (2010–2015). She played Charlotte Richards/the Goddess of All Creation on the FOX series Lucifer (2016–2018).

Helfer was born in rural Donalda, Alberta, Canada, to Dennis and Elaine Helfer. She studied at William E. Hay Composite High School in Stettler, Alberta. She lived and worked on the family's grain farm with her three sisters; Trena, Tammy and Tara. She was discovered at age 17 by a modeling agency scout while standing in line at a movie theatre with a relative of hers, Crystal. She is of German, English, Swedish and Norwegian descent.

In 1992 she won Ford Models' Supermodel of the World contest. Helfer retired from fashion modelling in 2002 and claimed all her shoots since then are related to projects or product endorsements. She has appeared in ad campaigns for Ralph Lauren, Versace, Chanel, and Giorgio Armani.