Josh Radnor Ted Mosby Actor Jason Segel Marshall Erikson Actor Neil Patrick Harris Barney Stinson Actor Alyson Hannigan Lily Aldrin Actor Cobie Smulders Robin Sherbatsky Actor Bob Saget Narrator Abby Elliott Jeanette Peterson Guest Star Christopher Nicholas Smith Strickland Stevens Guest Star Irene Choi Mia Guest Star Maliabeth Johnson Emma Guest Star Ashley Michaelsen Beach Babe Guest Star Carter Bays Executive Producer Craig Thomas Executive Producer George Sloan Writer Pamela Fryman Director