Frank Duncan is the father of Bob Duncan, ex-husband of Linda Duncan, and brother of Mel Duncan. In the episode, It's a Charlie Duncan Thanksgiving, he first appeared and fell in love with Mrs. Dabney, but when the Duncans left them alone for a hour, they had an argument and began to hate each other.

Background Information

  • He has two siblings: Mel Duncan and Stanley Duncan (Bob's two uncles).
  • He is not married to Linda anymore.
  • So far, he has only appeared in Good Luck Charlie once
  • He is grouchy
  • He hates cats
  • He went out with Mrs Dabney
  • Only he found out that he only liked her when other people were in the room
  • His father is named Patrick John Duncan, the kids great-grandfather.

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