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 Charlene Amoia Wendy Guest Star Matt Boren Stuart Guest Star Shaila Vaidya Cindy Guest Star Michelle Gunn Mrs. Abergast Guest Star Emily Baldoni Claudette Guest Star Michael Christian Alexander Intervention Leader Guest Star Declan Beaty Gilbert Abergast Guest Star Alex Lombard Amber Guest Star Carter Bays Executive Producer Craig Thomas Executive Producer Stephen Lloyd Writer Michael Shea Director