Lieutenant JG Jack Mancuso is an Engineering officer, currently assigned to the USS Avandar
- Full Name: John Patrick Mancuso
- Current Rank: Lieutenant JG
- Race: Terran
- Date of Birth: 2365.10.10
- Place of Birth: Knoxville, Tennessee, Earth
- Gender: Male
- Telepathic status: See Telepathic/Empathic Scale
- Height: 6 Feet
- Weight: 192 lbs.
- Hair Color: Black
- Eye Color: Hazel
- Spouse: None
- Father: William
- Mother: Sondra
- Siblings: None
- 2365 : Jack is born, the only child of William and Sondra Mancuso, in Knoxville, Tennessee.
- 2375 : Jacks uncle, Robert, delivers a telescope to him for his tenth birthday. Jack grows up idolizing his uncle, a civilian Engineer.
- 2382: Jack graduates high school, and against his parents wishes, takes the Starfleet Academy entrance exam.
- 2383: Sondra convinces Jack to wait one year, hoping he will change his mind about going to the Academy.
- 2384: Mancuso arrives in San Francisco to begin studies at the Academy. He selects an Engineering major.
- 2388: Mancuso graduates the Academy with an Engineering major, and a Science minor. He is assigned to the USS Avandar
Jack is a likeable fellow, but sometimes tries too hard to make friends. He enjoys time spent alone, and enjoys reading, watching old movies, and playing chess. Mancuso is an average Engineer, however he has become adapt at improvisation, and it makes his skills seem better than they truly are. Jack is bright and opinionated, with a sense of humour, but he has trouble with his self confidence, which occasionally hampers his efforts. He is occasionally sarcastic, but not disrespectful. He is especially proud of his roots in the South, and has developed a personal code that he believes embodies the spirit of the American South, even if some of his notions are influenced by historical falsehoods. While he wouldn't admit it, the rift between Jack and his father disturbs him deeply.