Memory Beta, non-canon Star Trek Wiki
Memory Beta, non-canon Star Trek Wiki
For other uses, see Procyon.

A Federation ship wrecked in the battle.

In the 26th century, the Battle of Procyon V was a pivotal engagement between the United Federation of Planets and the transdimensional Sphere Builders. The Sphere Builders attempted to transform the primary universe to make it habitable for themselves. The USS Enterprise-J led the Starfleet forces in the battle. As a result, the Federation halted the invasion and drove the Sphere Builders back into their transdimensional realm. (ENT episode: "Azati Prime")


The battle is underway.

The battle also played a pivotal moment in the Temporal Cold War as it was revealed that next to the Sphere Builders, the Na'kuhl, the Vorgons, an individual known as the Envoy, and Admiral Leeta of a restored Terran Empire in the mirror universe also played roles in it, together forming an organization called the Temporal Liberation Front that advocated that time travel should not be restricted or prevented.

In one version of events, Federation temporal agent Timot Danlen was killed shortly before the battle by Admiral Leeta as part of a 'gift' to her allies of the TLF. (STO - Future Proof mission: "Ragnarok")

Alternate timelines[]

In an alternate timeline where the Delphic Expanse was not dissolved in 2154, the expanse grew to over 50,000 light-years in reach by the 26th century. Danlen brought Captain Jonathan Archer from the 22nd century aboard the Enterprise. (ENT episode: "Azati Prime")

Participating vessels[]

  • Sphere Builders:
    • Arehbes-class
    • Edoulg-class
    • Denuos-class
    • other:
      • Delphic Expanse spheres
        • Command Sphere

External links[]