Bud Bunker McNulty is the father of one son and husband to Nora Baker-McNulty. He has respect for everybody around him and gets along well with both his parents-in-law and siblings-in-law, unlike Nora's selfish and kid-hating ex-boyfriend, Hank. He is a nice young man and always has a positive attitude. He planned on moving to Houston because of his job promotion but later decided to move to Lake Winnetka and buy his in-laws' vacation home on the lake after the birth of his son. He loves Nora and wants to support her when they want to decide their unborn baby's future.
Bud is seen eating at a clam bake with Nora that the Bakers are invited to. He most likely got a job promotion due to always having a positive attitude or for being responsible at work. He is constantly seen helping Nora go up steps and through doors. Bud wants to work part time after Nora gives birth so that he can be there for his wife and their unborn baby. When Nora goes into labor, Bud is a nervous wreck. At the hospital, Bud tries to calm his wife and then he snaps at a doctor at the front desk. He is relaxed after the birth of his son.
Bud is portrayed in the film by Jonathan Bennett.