NBC’s "Parks and Recreation" has cast a nemesis for Amy Poehler’s character Leslie Knope: a town councilman played by Jon Glaser, reports TVLine.com.

Glaser, a longtime writer on "Late Night with Conan O’Brien" and the creator of Adult Swim’s "Delocated," will play a local orthodontist who isn’t charmed by Knope and "doesn’t care about her bright-eyed, bushy-tailed attitude toward making the town better. … He just doesn’t like her," said "Parks and Recreation" showrunner Mike Schur.

Glaser’s character will debut in the third episode of the show’s upcoming season, which premieres Sept. 20.