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 Taran Killam Gary Blauman Guest Star Wayne Brady James Stinson Guest Star Emily Chang Steph Guest Star Joe Nieves Carl Guest Star William Zabka Billy Zabka Guest Star Abby Elliott Jeanette Peterson Guest Star Jorge Garcia Steve Henry Guest Star Kal Penn Kevin Guest Star Marshall Manesh Ranjit Guest Star Ellen D. Williams Patrice Guest Star Jennifer Morrison Zoey Pierson Guest Star David Burtka Scooter Guest Star Alexis Denisof Sandy Rivers Guest Star Carter Bays Executive Producer Craig Thomas Executive Producer 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, Writer