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 Wayne Brady James Stinson Guest Star Alan Thicke Alan Thicke Guest Star Patrick Hancock Security Guard Guest Star Lawrence Larsen Dr. Frederick Banting Guest Star Jeff Kueppers Norman Breakey Guest Star Victoria Boa Louise Poirier Guest Star Carter Bays Executive Producer Craig Thomas Executive Producer Pamela Fryman Executive Producer, Director Stephen Lloyd Executive Producer Chris Harris Executive Producer Chuck Tatham Executive Producer, Writer Jamie Rhonheimer Executive Producer Kourtney Kang Executive Producer