Steth, in Daelen's body.
Steth was a lifeform with the ability to take over the bodies of other humanoids.
In 2374 his ship was damaged and he was transported aboard USS Voyager. Once onboard, he won the friendship of Tom Paris, and then switched bodies with him and sent him away in his ship.
Steth remained on Voyager to live out Paris' life. Paris along with Daelen, whose body Steth had previously inhabited, returned to Voyager, and eventually convinced Captain Janeway that Steth had stolen Tom's body. They managed to force him into Daelen's body, returning Tom and Daelen into their original bodies. They then turned him over to the local authorities who's job it was to trace the former bodies Steth had occupied and return them to their original owners. (VOY:"Vis à Vis")
- Steth was played by Dan Butler.