Garpol

 was a businessman who stole several buildings to populate the Ararax XIV Heritage Centre. One of the buildings he stole was the Doctor's house. When the Seventh Doctor, Bernice Summerfield and Ace visited Ararax XIV, Garpol captured them and made them part of the exhibit. He forced them to act like a normal Earth family until the Doctor was able to engineer their escape. (PROSE: Question Mark Pyjamas)