Icheb

Genetically engineered to carry a pathogen that was destructive to the Borg;
Assimilated by the Borg, put into a maturation chamber
2376: Disconnected from the Borg collective, joins the Voyager's crew
Possessed a strong aptitude for astrophysics, often worked in the astrometrics lab
Returned to his Homeworld, parents tried to once again sacrifice him to destroy the Borg;
Recued by Voyager, decided to expand his expertise to include genetics
2377: Joined Starfleet Academy while on Voyager, returned to the Alpha Quadrant
2380s: Assigned to the USS Coleman as a Science officer
2386: Bjayzl harvested all his Borg components from his body, mercy killed by Seven