Margaret
Background
Margaret "Maggie" is a resident of El Paso, Texas. Her husband is Michael and her daughter is Debbie.
During the events of Manos: The Hands of Fate (1966) played by Diane Adelson
Michael, Margaret, Debbie and Peppy are traveling on their vacation outside El Paso, Texas. Cop 1 and Cop 2 pull Michael over and Cop 1 starts to give him a ticket for his left tail light being out. Michael asks him to cut him a break and Cop 1 lets him go without the ticket. Michael takes a left when he sees a sign for the Valley Lodge. He comes to a point in the road where it suddenly ends and he turns around and tries to go back the way he came. He stops at a large building and Margaret thinks they should ask directions. They see Torgo standing outside the door and everyone gets out of the car. Torgo tells them he takes care of the place while The Master is away, but does not think The Master would approve having Debbie or Peppy there. Michael and Margaret ask directions to the Valley Lodge, but Torgo says nothing by that name exists nearby. Due to how late it is, Michael suggests spending the night there, but Margaret wants to leave. Torgo also repeats that The Master wouldn't approve of them staying. Torgo eventually agrees to let them stay and then gets their luggage.
They go inside the building and see a painting of The Master and his doberman. Margaret comments how sinister The Master looks. Torgo tells them The Master has left Earth, but is with them always. Torgo tells Margaret that The Master likes her. They hear an animal screeching outside and Michael goes outside to scare it away. Peppy runs outside the open door and runs into the dark. Michael goes looking for him and finds Peppy dead and tells Margaret. Debbie asks for Peppy and Margaret lies to her and tells her Peppy ran away. Margaret says she wants to leave and Michael agrees and calls for Torgo. Torgo stares at Margaret as she is packing her clothes and tells her The Master wants her and then Torgo awkwardly touches Margaret's hair. Margaret tells him to stop and Torgo tells her The Master can't have her as he wants her. He tells Margaret he meant no harm and will protect her. Michael tells Margaret the car won't start and asks for a phone, but Torgo tells him The Master doesn't approve of phones and the nearest one is ten miles away.
Debbie leaves the building and Margaret go looking for her. Debbie walks up to them holding what appears to be the doberman from the painting on a leash. The doberman runs away and everyone goes back inside the building. They ask Debbie where she found the dog and she tells them at a place nearby. She takes takes them to the place, which appears to be a large temple. Lying against pillars are The Master's Wives and The Master lying on a sacrificial alter, all of them appearing to be asleep. They leave the temple area and go back to the building. Michael finds Margaret and Debbie and they try to escape. They decide to go back to the building. When Michael and his family make it to the building, they see The Master and Michael shoots at him. The bullets are ineffective and The Master just stares at Michael. The Master and his wives are shown sleeping, with the addition of Margaret and Debbie.