<Ul> <Li> Lucas Till as Angus "Mac" MacGyver: A highly intelligent and incredibly resourceful U.S. operative who works for the Phoenix Foundation, a covert agency operating under the guise of a think tank . Trained as an EOD technician for the Army, Mac prefers to use non-lethal means to stop his enemies; he is never without his trusty Swiss Army knife and uses anything in his environment to his advantage . </Li> <Li> George Eads as Jack Dalton: Mac's partner in the field and a former Delta Force soldier . Jack's history with Mac goes back to his days in the Army and unlike Mac, he is not afraid to use guns in the field . He also has history with Riley, because he was once in a relationship with her mother and had an altercation with her abusive father . While mostly easy - going and laid - back, Jack can get serious when the situation calls for it and often calls upon his special forces training to help the team get out of a tight spot . </Li> <Li> Sandrine Holt as Patricia Thornton (season 1, episodes 1--12): Initial Director of Field Operations at the Phoenix Foundation and, in Mac's own words, the most successful clandestine operative in U.S. history . By the book and serious most of the time, Thornton regularly assigns the team their missions . In the 12th episode, "Screwdriver", she is discovered to be a mole working for the Organization and arrested . </Li> <Li> Tristin Mays as Riley Davis: A tough - as - nails, sarcastic hacker who is hired by the Phoenix Foundation as their technical specialist . Riley was originally in prison for trying to hack the NSA in order to save her mother from a reclusive hacktivist group . She had a strained relationship with Jack because he vanished from her and her mother's lives after an altercation with her abusive father, but now views Jack as a father figure . </Li> <Li> Justin Hires as Wilt Bozer: Mac's best friend whom he has known since childhood . He is initially a struggling film director possessing several artistic talents . His ability to create lifelike prosthetic masks and facial prosthetics gets him hired at the Phoenix Foundation . Bozer is a source of comic relief and often helps Riley in exchange for earning the digits to her phone number . </Li> <Li> Meredith Eaton as Matilda "Matty" Webber (season 1, episode 13--present): Thornton's replacement as Director of Operations at Phoenix Foundation and Jack's ex-boss from the CIA . </Li> <Li> Isabel Lucas as Samantha Cage (season 2, episodes 1--11), CIA officer and formerly of SASR 4th Squadron . After she is discharged from the CIA for her unsanctioned actions in the second season premiere, Matty recruits her into the Phoenix Foundation . In the episode "Bullet + Pen", she is ambushed and shot by the assassin Murdoc in her apartment, but survives, and returns home to her native Australia to recover . </Li> </Ul> <Li> Lucas Till as Angus "Mac" MacGyver: A highly intelligent and incredibly resourceful U.S. operative who works for the Phoenix Foundation, a covert agency operating under the guise of a think tank . Trained as an EOD technician for the Army, Mac prefers to use non-lethal means to stop his enemies; he is never without his trusty Swiss Army knife and uses anything in his environment to his advantage . </Li> <Li> George Eads as Jack Dalton: Mac's partner in the field and a former Delta Force soldier . Jack's history with Mac goes back to his days in the Army and unlike Mac, he is not afraid to use guns in the field . He also has history with Riley, because he was once in a relationship with her mother and had an altercation with her abusive father . While mostly easy - going and laid - back, Jack can get serious when the situation calls for it and often calls upon his special forces training to help the team get out of a tight spot . </Li> <Li> Sandrine Holt as Patricia Thornton (season 1, episodes 1--12): Initial Director of Field Operations at the Phoenix Foundation and, in Mac's own words, the most successful clandestine operative in U.S. history . By the book and serious most of the time, Thornton regularly assigns the team their missions . In the 12th episode, "Screwdriver", she is discovered to be a mole working for the Organization and arrested . </Li>

Who plays jack dalton on the new macgyver