<P> Brandon Foster (season 1--present) is the 17 - year - old son of Stef and her ex-husband, Mike . He is one of Callie's love interests . He is very talented musically, specifically with the piano, and writes piano pieces which he presents for chances at scholarships . He has been shown to have an unsteady relationship with his father, Mike, due to the fact that Mike is a struggling alcoholic and has disappointed him many times through his childhood and teen years . At the start of Season 1, Brandon has a girlfriend named Talya, but breaks up with her because of his growing feelings for Callie and his annoyance and anger at her harassment and jealousy directed at Callie . For most of the first season, Brandon continues to pursue Callie romantically, even though she warned him that she could be kicked out of the house if they got involved . Brandon continues to make reckless decisions, included violating a restraining order, in order to be with Callie . Ultimately, he accepts that Callie needs a family more than a relationship, and eventually agrees to a mutual break up . He eventually joins a band and begins a relationship with bandmate Lou . </P> <Dl> <Dd> Portrayed by Maia Mitchell </Dd> </Dl> <Dd> Portrayed by Maia Mitchell </Dd> <P> Callie Adams Foster (season 1--present), 17, is one of the Foster family's new foster children . Callie is headstrong and tough as a result of being in the foster system since she was a child, but holds a soft spot for her younger brother Jude . She was sent to Juvie for destroying a car in order to protect him from their foster father's abuse . After she is released from Juvie and placed with the Fosters, Callie and Brandon rescue Jude, who is subsequently fostered by the Foster family as well . Callie has had a hard life--her mother is dead and her father is in jail and she has been abused in many ways in the foster care system . She initially has trouble opening herself up to her new family, but she slowly comes to love and accept them as her "forever" family . Initially, Callie opens up mainly to Brandon, and the two develop a romantic relationship, although it is forbidden by the rules of the foster system, which soon meets a heartbreaking end . Callie also holds an on - again, off - again relationship with a classmate named Wyatt . Unfortunately, after the Fosters decide to adopt Callie and Jude, Callie learns that the man she thought was her father (Donald Jacob) is not . She then pursues to meet her biological father, as well as her half - sister who looks as if she could be her identical twin . In the episode "Lucky" from season 3, she is officially adopted and an "Adams Foster ." </P>

Who plays the twins father on the fosters