| Ted Mosby Played by Josh Radnor. The central character of the show, Ted is a Wesleyan University graduate, was an architect and now is a professor of architecture, according to Barney, thinks too much. After his best friend Marshall becomes engaged, Ted decides to try and find his soulmate. |
| Marshall Eriksen Played by Jason Segel. Marshall met Ted and Lily during their freshman year at Wesleyan University. He is a Columbia Law School graduate originally from St. Cloud, Minnesota. Even though he's six-foot-four, he is the shortest member of his family. Marshall currently works for Goliath National Bank. |
| Lily Aldrin Played by Alyson Hannigan. She is a Kindergarten teacher. She is married to Marshall Eriksen and grew up in Brooklyn, New York. |
| Barney Stinson Played by Neil Patrick Harris. He is a womanizer, favors suits, laser tag, and the words "awesome" and "legendary," which Ted believes he uses too liberally. |
| Robin ScherbatskyScherbatsky Played by Cobie Smulders. She is a Television news reporter/anchor at Metro News 1. Like Cobie Smulders in real life, she is originally from Canada. She was a teen pop singer under the name Robin Sparkles. |
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