Ian Bird

 was part of a research project on the planet Fraternity. He was Professor Sarah Emmins' research assistant.

When a duplicate of him arrived at the research station, Ian was uncomfortable in its presence. He was cooperative during the investigation by the Fifth Doctor and Nyssa, but was starting to be influenced by Stuart Gorey's suspicions of the duplicate.

The duplicate took Sarah hostage, but she was rescued by Ian. (PROSE: The 57th)