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A fictional, super-massive alien spacecraft from the MACROSS series.
The Fulbtzs-Berrentzs Class Mothership is a Zentradi vessel so large it is better classified as a small stellar mass than as a spacecraft. It is the colossal mothership of the Spiral Nebula Arm Central Fleet also known as the Boddole Main Fleet.
At over 1,400 km (870 miles) in height, the Fulbtzs-Berrentzs commands a fleet of millions of Zentradi capital warships.
Several sets of massive bay doors litter the outside of this gargantuan vessel allowing ships larger than the Nupetiet-Vergnitzs class to travel dozens of kilometers through the flagship's hull and into the open interior.
Inside the mothership, thousands of Zentradi warships can be docked and re-supplied. In the center of the open interior lies the main command super-structure, a massive pillar stretching from the bottom to the top of the vessel interior. It is within this spire that the bridge can be found and where Golg Boddole Zer leads the millions of space warships at his command.
In real life it was designed by artist Miyatake Kazutaka in the early 80s.