Ian Purvis was the chief engineer of the Federation Starfleet starship USS Everett in the late 24th century. In March 2381, Purvis worked with the Everett's science officer, Commander Heather Petersen, and Federation Department of Temporal Investigations agents Dulmur and Lucsly aboard the transport Verity investigating the sabotage of the ship's warp drive. (DTI novel: Watching the Clock) He was named after Doctor Who actors Ian Marter and Peter Purves.