Central Computer Stage

The Central Computer Stage, also known (roughly) as the "Very Large Computer Interior Stage" (超大型コンピューター内部ステージ), is Magna Centipede's stage in Mega Man X2 and Mega Man Xtreme.

Mega Man X2
After the Opening Stage, the central computer appears as a location used by the X-Hunters to observe X. Magna Centipede snuck into the computer center to use it as a way to transmit the Maverick Virus around the world. X went to the area to stop him, fighting against Magna Centipede and destroying him.

Once the X-Hunter Stage 4 is complete, visiting either the X-Hunter Stages or Magna Centipede's stage will trigger the final battles in the room where the first sub-boss, Chop Register, used to appear. Depending on whether the player collected all of Zero's parts or not, the final battles either involve a brainwashed Zero followed afterward by Sigma, or otherwise just fighting Sigma.

Mega Man Xtreme
A digital recreation of the stage appears in the hacked Mother Computer from the Hunter Base.

Mega Man X2
Heart Tank: Don't hit any spotlights at the start of the stage. You will see a Blecker adding a part to a wall. Dash-jump and use charged-up Speed Burner to get up there.

Sub Tank: Hop on the Installer near an opening in the ceiling. Ride it to wall-jump up the wall. (Use a charged-up Speed Burner if needed)

Mega Man Xtreme
Heart Tank: Same location as in Mega Man X2.

Sub Tank: Similar location as in Mega Man X2. Check the openings in the ceiling.

Zero Final Capsule: In the big, fat room after the first Raider Killer. Use the small block tower, and break through the plastic blocks.

Mega Man X2

 * Sub-boss: Chop Register
 * Sub-boss: Raider Killer
 * Barrier Attacker
 * Barite Lastar
 * Blecker
 * Installer
 * Scrambler

Mega Man Xtreme

 * Sub-boss: Raider Killer (fought twice)
 * Barrier Attacker
 * Barite Lastar
 * Blecker
 * Installer
 * Sky Claw

Other media
Central Computer appeared in the Rockman X2 manga.