Samantha Carter is a hallucination of a female Human who was seen by Lieutenant Typhuss James Halliwell after receiving a head injury during the battle with Penk's starship in 2376.

The hallucinatory Samantha Carter first began appearing to Typhuss on stardate 53529.4, after Voyager left the Norcadian homeworld, first on the bridge then in sickbay and then in his quarters.

When Typhuss was alone in his quarters after getting his head injury healed by The Doctor, the hallucination of Samantha Carter appeared to him again. (Star Trek: Kingston episode: The hallucination of Samantha Carter)