Was rendered inert by the destruction of its home planet before being found and rebuilt by Dark Merchant Biznella, and was reawakened on Earth on the night of the Star Festival.
Was drained of its power during an ancient battle with an unidentified nemesis before being found and rebuilt by Deviot, and was reawakened on Terra Venture following a lengthy battle.
Could roar once in a while when fighting alongside its fellow Starbeasts.
Could not roar like the other Galactabeasts.
After the Gingamen summon him, it was in charge of determining which of its fellow Steel Starbeasts needed to be released into battle and then doing so, based on the type of opponent the Gingamen were facing (which the narrator would explain the reason for doing so, excluding the battles where both were needed).
As there is no narrator for Lost Galaxy, Zenith only released the Zords stored in its body based on what the Lost Galaxy Rangers called for (instead of calling for Zenith directly).