Ryan Fletcher is a CIA analyst who is framed by Division to take the fall for a Division assassination.
Fletcher had already been aware of some of the murkier dealing between CIA and Division although he did not know of Division's existence. To get rid of him, Division sets him up for the assassination of a Chilean presidential candidate.
In Dark Matter,Nikita and Owen rescue him and he finds out about Division, giving him leverage so that Division won't be able to kill him. Fletcher shows interest in Nikita and feels betrayed when they capture Birkhoff and he realizes that revenge is more important to her than his career. Later, as a way of apology, Nikita kisses him and promises to make him a hero, placing him in a different department of CIA after he "uncovers" certain information through Nikita.
In The Next Seduction, Fletcher and Nikita team up again to dispel a bomb threat on American soil; after, he and Nikita kiss.