Josh Radnor Ted Mosby Actor Jason Segel Marshall Erikson Actor Alyson Hannigan Lily Aldrin Actor Neil Patrick Harris Barney Stinson Actor Cobie Smulders Robin Sherbatsky Actor Bob Saget Narrator Carrie Underwood Tiffany Guest Star Brooke Mackenzie Lisa Walker Guest Star Tiara Parker Dinana Guest Star Catherine Reitman Henrietta Guest Star Ron Nicolosi Mike Guest Star Roz Witt Mom Guest Star Garrett Nicholas Dad Guest Star Jeff Leaf Jack Guest Star Valorie Hubbard Gladys Reynolds Guest Star Carter Bays Executive Producer Craig Thomas Executive Producer Kourtney Kang Writer Pamela Fryman Director