The Ring (Chuck)
The Ring is a major spy organization in the television series Chuck. The main antagonist of the second season (after being introduced in the first), Fulcrum, is revealed in the Season Two finale to be only one part of the Ring, which then serves as the main antagonist of Season Three. The Ring's goals are not known, but it is clearly in conflict with the legitimate American intelligence community, and attempts to manipulate politics in several countries to accomplish its ends.
Organization
Little information about the Ring has been revealed so far. In "Chuck Versus the Ring," Bryce Larkin reveals that FULCRUM was only one part of the Ring, however he died from a fatal gunshot wound before he could say anything further about what he knew. Unlike FULCRUM, which is primarily made up of rogue elements of the CIA, the Ring has operatives outside the intelligence community.
How much the government knows about the organization is also unknown. Bryce Larkin was familiar with their existence, and Daniel Shaw has been tracking them for at least five years by the time he takes over command of Team Bartowski. In "Chuck Versus Operation Awesome" he reveals that the Ring is primarily cell-based and consists of a large number of small and decentralized groups. Ring cells operate with a high degree of autonomy, and an agent who misidentified Devon as a spy would not have reported in to her superiors until it was confirmed they had him "turned."