Josh Radnor Ted Mosby Actor Jason Segel Marshall Erikson Actor Neil Patrick Harris Barney Stinson Actor, Director Alyson Hannigan Lily Aldrin Actor Cobie Smulders Robin Sherbatsky Actor Bob Saget Narrator David Henrie Son Guest Star Lyndsy Fonseca Daughter Guest Star Ron Nicolosi Mike Guest Star Charlene Amoia Wendy Guest Star Joe Nieves Carl Guest Star Ben Koldyke Don Frank Guest Star Matt L. Jones Pizza Guy Guest Star Suzie Plakson Judy Eriksen Guest Star Marshall Manesh Ranjit Guest Star Jim Nantz Jim Nantz Guest Star Marieve Herington Betty Guest Star George Finn Jamie Adamic Guest Star Piper Mackenzie Harris Eleven-Year-Old Lily Guest Star Krys Marshall Bridesmaid Guest Star Carter Bays Executive Producer, Writer Craig Thomas Executive Producer, Writer Matt Kuhn Writer Theresa Mulligan Rosenthal Writer Chris Harris Writer Jamie Rhonheimer Writer Robia Rashid Writer Chuck Tatham Writer Kourtney Kang Writer Greg Malins Writer Joe Kelly Writer Greg Gerard Writer Stephen Lloyd Writer Rob Greenberg Director Matthew Zinman Writer Pamela Fryman Director