| Sphere |
| First Known Appearence: 2373 |
| History |
| After the Cube was destroyed in the second attempt to assimilate Earth a Borg Sphere was launched and traveled back in time to stop the Flight of the Phoenix and assimilate Earth while it was still in chaos. However though the USS Enterprise E followed the Sphere and stopped the Borg once again. |
| In 2374 a Borg Sphere hunted down the USS Voyager and attempted to assimilate it. An advanced Borg drone known as One transported over to the Borg Sphere and directed it into a dangerous nebula where it was destroyed. |
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| Almost 2 years later in 2376 Voyager encountered another Borg Sphere while rescuing Icheb. |