The Black Hole Server is a secret server in Mega Man Star Force 3 that the player can access after beating several Rebuilt EM Beings and Rogue Z. It is a massive server made from the powerful electromagnetic waves of the supermassive black hole located at the center of the Milky Way.
The entire server is controlled by the EM Being Sirius. It is capable of consuming EM Beings, their data, and planets, then recreating them. Such recreated beings are referred to as Rebuilt - or "R" - beings.
Black Hole Server
The Cyber Core of the Black Hole Server may be accessed by EM Beings as they would any other Cyber Core. Lesser EM beings, such as Hertzes, will become enervated and inevitably consumed by the power of the server, while stronger EM Beings such as those formed by EM Wave Change are only absorbed if they are defeated while inside of the Cyber Core.
Main Article: Sirius
Sirius resides at the center of the Black Hole Server. Though he appears calm in disposition, Sirius opts to fight Mega Man as soon as the two meet. He attacks using a combination of laser and slashing attacks with his wings, and is protected by EM barriers in the center row which deflect both projectile and lock-on attacks.
Main Article: Meteor G
Mega Man later queries the Rebuilt Cygnus Wing as to how the Meteor Server compares to Sirius' own Black Hole Server, and is met with the response that the former is only a single folder when compared to the entirety of the latter.
When Sirius is eventually defeated by Mega Man, he transfers his data back to "that" server and encourages Mega Man to gather the "5 stars." Once this is complete, Sirius' power bolsters that of the Crimson Dragon, making it into Crimson Dragon SP.
- Omega-Xis notes to Geo that the area around the server is near the center of the galaxy, which would make the Black Hole Server's identity that of Sagittarius A*, the supermassive black hole at the center of the Milky Way.
- While all other Cyber Cores ACCESS signal are blue, the Black Hole Server has a purple ACESS signal.