Bob Duncan is the patriarch and father of the Duncan family.He is son of Frank Duncan and Linda Duncan and the stepson of Chet Brown.
Bob Duncan is the Duncan children's father and Amy Duncan's husband. He's an exterminator, which Teddy dislikes about him. He is just like any other father in the world. He loves and cares about his family, and entrusts them with their baby, Charlie.
Amy goes back to work, entrusting her kids to take care of Charlie. But when Bob falls down the stairs and hurts his buttocks, PJ has to drive him to the hospital and Teddy has to take care of the baby. In the hospital, PJ pretends to be a doctor so as not to be identified, but his disguise is ruined when his mom finds out. She says she can't handle it anymore, but Bob tells her that everything's gonna be okay ("Study Date").
Teddy tells her parents that they needed a break from baby Charlie, and that they should go out on a date. But then PJ takes Charlie to the park and accidentally swaps strollers with a girl named Emma, and brings home the wrong baby. They do everything they can to retrieve the baby, but in the end, they are caught by their parents and get grounded ("Baby Come Back").
Amy and Bob's anniversary is coming, Teddy wants to give them the best day ever, but because of her sibling causes problems ("Butt Dialing Duncans"). She is very excited about this!
Amy and Bob Duncan are both a couple. They married in December 1990, Bob was 28 and Amy was 26 They love each other just as any other couple does. Amy also trusts Bob in taking care of the baby, Charlie, when she is away or goes to the hospital.However, it is revealed that they are not really married ("Snow Show, Part Two").
Pj is Bob's oldest son.
Teddy is Bob's oldest daughter.
Gabe is Bob's youngest son.Gabe is 11/12 years old.Gabe and PJ bond well.Although it appears as if Bob does not like Gabe as much as PJ,Teddy,and Charlie, he really does.
Charlie is Bob's youngest daughter.