He once addresses Leslie as his 'best friend', much to her horror. He buried the hatchet with Leslie and Ron after helping him break up with Tammy.He owns a bright yellow sports car which he once got an Asian girl to sit in.She forced him to eat red meat and drink dark liquor, which his irritable bowel syndrome could not tolerate and made him miserable, but he was unable to break up with her. At one point he dates Tammy Two being manipulated by her, but Tammy wanted him to be an exact copy of Ron Swanson.He likes teppanyaki, karaoke, Lucy Liu, gongs, kimonos, samurais, edamame ('tokyo beans'), and more.

He is a Japanophile, although generalises between Japan, China, and Korea.Loves to sing Grease karaoke, but has to sing the part of Sandra D due it being 'more in his register.'.In season 4 episode 7 'The Treaty' Jamm's name is shown in the seat of head councilman.He is an orthodontist, and owns his own practice called Jamm Orthodontics.Instead, Councilman Jamm wants to sell the lot to Paunch Burger. In ' Emergency Response', it's revealed that it was Councilman Jamm who arranged for the Indiana Department of Emergency Preparedness to give Leslie an extremely hard city emergency response review in order to delay her gala, which was organized in an attempt to raise $50,000 to build Pawnee Commons on Lot 48. Councilman Jamm argues with Leslie regarding her proposals, telling her he will only vote yes on her bill to extend the community pool hours if she gives him her office. He continually uses her private office bathroom, and expresses his annoyance at the least senior city council member having the best office. As soon as Leslie is elected to City Council, Councilman Jamm makes sure to let her know he doesn't like her.

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