Josh Radnor Ted Mosby Actor Jason Segel Marshall Erikson Actor Cobie Smulders Robin Sherbatsky Actor Neil Patrick Harris Barney Stinson Actor Alyson Hannigan Lily Aldrin Actor Cristin Milioti Tracy McConnell Actor Bob Saget Narrator Andrew Rannells Darren Guest Star Ahna O'Reilly Kelly Guest Star Roger Bart Curtis Guest Star Adam Paul Mitch Guest Star Lou Ferrigno Jr. Louis Guest Star Rachel Bilson Cindy Guest Star Robert Belushi Linus Guest Star Carter Bays Executive Producer, Writer Craig Thomas Executive Producer, Writer Pamela Fryman Executive Producer, Director Stephen Lloyd Executive Producer Chris Harris Executive Producer Chuck Tatham Executive Producer Jamie Rhonheimer Executive Producer Kourtney Kang Executive Producer