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 Alan Thicke Alan Thicke Guest Star Nicole Scherzinger Jessica Glitter Guest Star Chris Romano Punchy Guest Star Stefanie Black Kelly Guest Star Carter Bays Executive Producer Craig Thomas Executive Producer Kourtney Kang Writer Pamela Fryman Director