List of How I Met Your Mother characters
The main characters are: Ted Mosby, a romantic searching for "The One"; Barney Stinson, a womanizer; Robin Scherbatsky, a journalist who moved to New York in 2005; and Marshall Eriksen and Lily Aldrin, a long-term couple. Although the show is based around The Mother, her first appearance is not until the season eight finale.
List of How I Met Your Mother characters
Marvin has been played by twins, and several actors have been credited as playing him; Jake Elliott, August Maturo and Spencer Ralston have played the part of Marvin during various flashforwards. Craig Thomas said that they were "tending to the fact that [Marshall and Lily] have a baby more than other shows have", although Marvin "doesn't take over the show."