What we do know is this:

The Vishnans were named by Samuel Bei. They do not refer to themselves as Vishnans, nor to the Shivans as Shivans. They have the ability to scan, subvert, and manipulate human minds via the Nagari process, learning rapidly and comprehensively. This makes them incredibly dangerous.

The presence of a Knossos in the parallel N362 suggests the Ancients had contact with the Vishnans, yet the Vishnans did not save them from the Shivans. This suggests that Vishnan motives are not purely benevolent, and certainly not simply helpful 'Great Preservers'. Scans of N362 in our universe indicate that an inactive Knossos portal is present in the system. Given the consequences of activation of the last Knossos portal, no attempts have yet been made to power up or activate the device. However, analysis of the artifact by Dr. Mina Hargrove's team suggests that it was last active just over fifty years ago, and that it could be activated again if an appropriate code was uploaded to its onboard control systems. GTVI believes that data transmitted from the GTC Duke during its sojourn to a parallel N362 contained the code, but the Duke defected to the Federation at the beginning of the recent war for the liberation of Sol. It is possible that a particular combat spacecraft from the 222nd Nightwolves contains the intact code, but an onboard accident aboard the GTD Temeraire shortly after the opening of the war somehow led to the destruction of this spacecraft's records. GTVI is investigating.

Our tentative simulations suggest that the Vishnan 'Great Psyche' is a subspace stack entity, a sophisticated construct that exploits energy gradients in subspace to perform computation and cognition. Because subspace surrounds and connects universes, this entity exists outside time and space, and is capable of observing the entire space-time bulk. This grants it complete knowledge of all events past and future, although this knowledge may be hampered by quantum uncertainty. The origin of this entity is unknown, but we believe it may be artificial in nature.

The Vishnan ships present in the physical universe are agents of this entity. They may be constructed in subspace and delivered to target universes, or built on the scene. In any case, these individual aspects of the Great Psyche appear to be fragmented instances of the overall Vishnan entity charged with specific tasks and possessed of limited knowledge and agency. Loss of contact with the Great Psyche leads to inactivation and effective death.

The Vishnans in the parallel reality accessed by the 14th Battle Group were unaware of the particulars of human existence or of specific local events until Samuel Bei provided them with this information. However, the Vishnan Great Psyche as a whole appears to have instigated the 14th Battle Group's transit in an effort to accomplish a goal related to the GTD Sanctuary.

A more alarming possibility is that the Vishnans were, in fact, attempting to manipulate the officers of the 14th Battle Group into a mindset where they would be unable to accomplish their original missions.

In line with the multiple findings produced by Project Nagari, the Security Council has agreed to proceed with contingency MORPHEUS.