Poggit

Mrs Poggit was an elderly Human living in Upper Leadworth. She lived in the old people's home along with the rest of the pensioners of the town. In the fake world created by the Dream Lord, her body was taken over by an Eknodine, a member of an alien race that fled their world and lived in the bodies of old people, keeping them alive for many years. When the Doctor, Amy Pond and Rory Williams woke up in the dream world, she asked the Doctor if he could try on her jumper for her nephew, but when he tried it on, he examined her stating that she was really old, older than any normal human, then he fell asleep again. Soon, they noticed Mrs Poggit walking to the children's trip, wondering what she wants. When they woke up again, they found out that all the children were dead, and that they were killed by 'Mrs Poggit'. It was revealed that the aliens who took over the pensioners, had an "eye" in their mouths, which could release a gas which disintegrated their enemies. They did this to people as they wanted revenge for what happened to them. When the Doctor confronted them, the postman arrived but Mrs Poggit killed him. They escaped, but Rory and pregnant Amy were trapped in their baby's future room in their house. After the Doctor climbed through one of the windows, Mrs Poggit climbed to another and she killed Rory, but the Doctor whacked her with a lamp, causing her to fall off the roof. She was later seen bearing an axe just before the Doctor and Amy crashed the camper van, ending the dream.

This reality, however, was not real, meaning Mrs Poggit is still alive and well in the real 21st century Leadworth and never killed anyone. This is confirmed in one of the first three Matt Smith BBC books, The Forgotten Army. (DW: Amy's Choice)