Dark Star (F-Zero)

Dark Star is the secret location of Dark Million, Black Shadow's organization. It was featured during the Japanese dubs very late in the F-Zero GP Legend anime, Falcon Densetsu. Such members that hang out there are Black Shadow, Zoda (F-Zero: The Legend of the Falcon, clones of Blood Falcon, Octoman, Bio Rex, Baba, Haruka Misaki, The Skull (F-Zero), and occasionally Pico (F-Zero). There was also Don Genie and Deathborn; however, they were disguises by Black Shadow to which Ikran doesn't allow.

Ikran's F-Zero timeline
Indeed, it is the main base of operations of Dark Million, where it houses all their machines, Death Soldiers, Reactor Mights of Darkness, as well as each member. It has been featured with many corridors as well as a secret laboratory and even a throne room for the Emperor of Brutality himself. It is said that it's nomadic; never stays in one location very long in the deep reaches of space.

At times, it was featured in the anime, but only bits and pieces whenever Dark Million hatches a scheme. Even during Tinsel's Trial when she was brainwashed by Black Shadow's experiment using the Dark Reactor Mights. But the majority of it was unveiled during Ending it All:

During that story arc, it was first featured as Zoda was wreaking havoc while he was searching for the elope, Octoman, as he and Baba were being enlisted in the elite Big Blue race, the Dolphin Dive. After that, stasis tubes filled with the dark Mights as well as each member of the Task Force were stored here, including their makeovers of themselves and their machines. Even after the Fire Field race when Rick Wheeler was the first to be awakened and serve Dark Million. Each pilot woke up in sequence: Jack Levin, Lucy Liberty, Dr. Theodore Clash, John Tanaka, Jody Summer and Dr. Stewart, and Mr. EAD (aka Mr. BAD).

A lot more was represented during the Championship when Rick was taken hostage after he was rendered unconscious by Black Shadow's 2 Reactor Mights. He was trapped in a stasis tube, with Rodney in a separate one, till he escaped thanks to his friends' support. Dark Star is mostly equipped with tractor beams, impenetrable armor, even forcefields, devastating orbiting sensors, and layers of darkness that can help it blend in like a nebula. The garage and laboratory were also seen during the saga, Destination: Dark Star, including a massive circular area where the pilots succumbed to The Skull's spell and even a confusing maze which'd lead to the Dark Reactor Core and the secret lab.

Thanks to Rick, Captain Falcon, Yugi's Blue-Eyes and Joey's Red-Eyes, the fortress was finally eradicated; even before it had the chance to obliterate Earth and the universe like it did with Uma-51.