Rebecca Alie O'Connell is an American actress and former model. She is known for her role as Mystique in the original trilogy (2000–2006) of the
X-Men film series, as Joan from
The Punisher (2004), the dual roles of Laure Ash and Lily Watts in
Femme Fatale (2002), and Una Chin-Riley on
Star Trek: Discovery (2019) and
Star Trek: Strange New Worlds (2022–present). She has also had a recurring role as Alexis Meade on the ABC television series
Ugly Betty. Her other major roles include Eve Baird on the TNT series
The Librarians, voicing Lois Lane in the DC Animated Movie Universe, and as the host of the reality competition show
Skin Wars.