The Fictel family consists of Dermott Fictel, Margaret Fictel, and Nikki Fictel. Dermott is Hank's best friend and bandmate. He lives in a trailer park with Margaret and Nikki. Margaret is Nikki's mother, and Dermott's grandmother. However, Dermott was raised to believe Nikki is his sister, and Margaret is his mother.
Margaret and Nikki hid the truth from Dermott because Dr. Thaddeus Venture impregnated Nikki and is Dermott's biological father, much to Margaret's dismay.