<Dd> Played by Thomas Lennon; appears in "Farhampton" and "The Pre-Nup". Klaus is Victoria's fiancé . They were classmates at Victoria's culinary fellowship in Germany but enter a relationship roughly a day after Ted and Victoria break up . He appears on - screen in "Farhampton" as Victoria's groom, but both of them get cold feet at their wedding . The failure of the wedding sends Klaus into a spiral and he briefly stays at Ted's apartment . </Dd> <Dd> Played by Jane Seymour; appears in "Aldrin Justice". Professor Lewis is Marshall's recently divorced law professor who is considered a "cougar" by Barney . He has sex with her several times . </Dd> <Dd> Played by Mircea Monroe; appears in "Romeward Bound". She is Barney and Robin's wedding planner, and has a "ridonkulous" body according to Ted and Barney . </Dd> <Dd> Played by Erinn Bartlett; appears in "Mary the Paralegal". Although she is a paralegal, Barney tells Ted she is a prostitute . After initially refusing, Ted tries to have sex with Mary but when he calls her a prostitute she slaps him . </Dd>

How i met your mother cast marshall's brother