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 Robert Belushi Linus Guest Star Mark Derwin Greg Guest Star David Mattey Animal Trainer Guest Star Kenzo Lee Young Man Guest Star Carter Bays Executive Producer Craig Thomas Executive Producer Pamela Fryman Executive Producer, Director Stephen Lloyd Executive Producer Chris Harris Executive Producer, Writer Chuck Tatham Executive Producer Jamie Rhonheimer Executive Producer Kourtney Kang Executive Producer