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 David Henrie Son Guest Star Lyndsy Fonseca Daughter Guest Star Ron Nicolosi Mike Guest Star Ben Koldyke Don Frank Guest Star Tyler Peterson Thirteen-Year-Old Marshall Guest Star Trent Peltz Ricky Guest Star Bob Odenkirk Arthur Hobbs Guest Star Harvey Fierstein Lily's Smoking Voice Guest Star Carter Bays Executive Producer Craig Thomas Executive Producer Theresa Mulligan Rosenthal Writer Pamela Fryman Director