John (Knock Knock)

John, often referred to simply as the Landlord, was the landlord of a large house in England. He lured various students to live into his house by allowing many people to stay whilst also being affordable. The reason for this however was because his mother Eliza was extremely ill, to which the Dryads living in the house kept her alive when they were fed people.

When Bill moved in with her friends, they noticed something strange about the landlord as well as the old fashioned and creaky house. With help from the Twelfth Doctor they soon found out his secret and convinced Eliza to stop it all, as life isn't really worth living when you're alone. She controlled all the Dryards to eat her and John, and as a result caused all the Dryads to swarm out of the house, removing all the wood and making the house uninhabitable. (TV: Knock Knock)