Lucas Till Angus "Mac" MacGyver Actor Tristin Mays Riley Davis Actor Justin Hires Wilt Bozer Actor Meredith Eaton Matty Webber Actor Levy Tran Desi Nguyen Actor Henry Ian Cusick Russ Taylor Actor Tate Donovan Oversight Guest Star Jeri Ryan Gwendolyn Hayes Guest Star Xander Berkeley General John Acosta Guest Star James Callis Merchant Guest Star Scottie Thompson Ellen Guest Star Zach McGowan Roman Guest Star Emmanuelle Vaugier Major Anne Frost Guest Star Camille Mana Hanna Guest Star Leonardo Nam Aubrey Guest Star Ramon De Ocampo Phillip Lasky Guest Star Amber Skye Noyes Scarlett Guest Star Jeremy Palko Soldier Guest Star Mary Elizabeth Kirkpatrick Ella Guest Star Braxton Alexander Acosta's Grandson Guest Star Paul Downs Colaizzo Executive Producer Brett Mahoney Executive Producer David Von Ancken Executive Producer Henry Winkler Executive Producer Lee David Zlotoff Executive Producer Craig S O'Neill Executive Producer Cindy Appel Writer Terry Matalas Writer Rob Pearlstein Writer Andrew Karlsruher Writer Stephanie Hicks Writer Jim Adler Writer Andrew Klein Writer David Straiton Director Roderick Davis Director Yangzom Brauen Director Brad Turner Director Lily Mariye Director Duane Clark Director Ericson Core Director