Alexa Davalos (born May 28, 1982) is an American actress. Her breakthrough role came as Gwen Raiden on the fourth season of the TV series Angel (2002–2003) and she has gone on to appear in several Hollywood films, including The Chronicles of Riddick (2004), Feast of Love (2007), The Mist (2007), Defiance (2008) and Clash of the Titans (2010).