Kell (Jon Anderson)

Kell is a Klingon male and an agent of Klingon Imperial Intelligence. In 2266, Kell was surgically altered into a human and assigned to infiltrate Starfleet. He became Ensign Jon Anderson, a security officer on the USS Enterprise (NCC-1701). Kell's mission was to kill Captain James T. Kirk. 

History
For his actions in System 1324 against the Orions, Ens. Anderson was awarded the Starfleet Medal of Honor for his heroism. 

Relationships
Kell grew up with an older brother, Karel and a mother. His father was an officer with the Klingon Defense Force who perished during the Battle of Donatu V in 2244.

While serving on the Enterprise, Kell befriended his roommate, Ensign Luis Benitez, and had a romantic relationship with Ensign Leslie Parrish.

At first highly distrustful of "Earthers", Kell quickly grew to respect his Section Chief, Lieutenant Sam Fuller, and his fellow squadron members. He also came to learn that, unlike how he was portrayed by his I.I. instructors, Captain Kirk was not the antithesis of everything the Klingon Empire stood for but an honorable warrior.