Josh Radnor Ted Mosby Actor Jason Segel Marshall Erikson Actor Cobie Smulders Robin Sherbatsky Actor Neil Patrick Harris Barney Stinson Actor Alyson Hannigan Lily Aldrin Actor Cristin Milioti Tracy McConnell Actor Bob Saget Narrator Ray Wise Robin Scherbatsky Sr. Guest Star Spencer Ralston Marvin Eriksen Guest Star Stephen Grove Malloy Chef Budi Guest Star Sharline Liu Photographer Guest Star Mariangela Pagan Mother Guest Star Katie Silverman Young Penny Mosby Guest Star Dexter Cross Little Boy Guest Star Robert Belushi Linus Guest Star Carter Bays Executive Producer, Writer Craig Thomas Executive Producer, Writer Pamela Fryman Executive Producer, Director Stephen Lloyd Executive Producer Chris Harris Executive Producer Chuck Tatham Executive Producer Jamie Rhonheimer Executive Producer Kourtney Kang Executive Producer