<P> Foster was born in Winfield, Illinois, at Central DuPage Hospital . He is the only boy in his family and has two sisters . He later moved to Highland Village, Texas, a suburb of Dallas, where he became interested in acting as early as elementary school . He went to Briarhill Middle School, and later attended Edward S. Marcus High School where he was involved in theater until he graduated in 2003 . He attended Collin County Community College for one semester with a focus on acting, but soon left his studies to pursue a professional career in that field . He plays guitar and is the lead singer of his indie rock band "Siren's Eye". They released their first EP on iTunes, entitled "Red Room" on 15 December 2009 . </P> <P> Foster appeared in the small indie film The Beautiful Flowers, before landing the regular role in the ABC Family comedy - drama series, Greek . The series ran from 2007 to 2011 . During his days on Greek, Foster also had the leading role in the independent film, Teenage Dirtbag . He later guest - starred on Law & Order: LA, Melissa & Joey, Friends with Benefits, The Closer, and Parenthood . </P> <P> In 2012, Foster had recurring roles in the fifth season of Showtime comedy - drama series, Californication, and short - lived ABC paranormal horror series, The River . In 2013, he had the regular role in another short - lived ABC series, Zero Hour opposite Anthony Edwards and Carmen Ejogo . In 2014, Foster had recurring roles in AMC period drama, Halt and Catch Fire, and later in that year began appearing in the ABC Family drama series, Chasing Life as a love interest for the lead character . Also in 2014, he played the role of Kristoff in the fourth season of ABC fantasy series, Once Upon a Time . </P> <P> In 2015, Foster began starring in the ABC prime time television soap opera, Blood & Oil alongside Don Johnson and Amber Valletta . In 2015, he was listed one of Variety's "10 Actors to Watch". </P>

Who plays kristoff on once upon a time
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