Nebula

Nebula is a mysterious NetCriminal organization seeking to cover the world in darkness and major antagonists in the MegaMan Battle Network series, serving as the main antagonists of Mega Man Battle Network 4 and Mega Man Battle Network 5.

Mega Man Battle Network 4
Prior to the game, Nebula existed while World Three and Gospel were active. Following the destruction of both groups Nebula rose to become the reigning NetCrime organization and began committing crimes all across the world.

During the NetBattle tournaments, Nebula attacked and spread corruption with the use of Dark Chips, Battle Chips infused with the power of darkness.

When NAXA attempted to destroy an asteroid heading towards Earth by firing a lazer at it, Dr. Regal secretly sabotaged their laser by having LazerMan.EXE reduce its power by 120%. Regal then proposed they hold an international NetBattle tournament and send the winning NetNavi into the asteroid's cyberworld to divert its course. After the tournament was won by Lan and MegaMan, Nebula began a massive cyber-attack all across the world cutting off global communications. Regal sent Lan and MegaMan to stop the attack but after a Nebula agent attempted to suicide bomb them Regal declared both dead and sent LazerMan to the asteroid instead, plotting to use it to coat the world in darkness.

However, Lan and MegaMan survived and pursued LazerMan to the asteroid. They defeated him and stopped the asteroid from impacting Earth, but when the NetNavis operators went to confront Regal he escaped.

Mega Man Battle Network 5
Nebula returns in full force with an army of Darkloids, NetNavis who have given themselves to the power of darkness, and conquers a significant portion of the Internet. Regal plotted to use the SoulNet designed by his father and Tadashi Hikari to turn all humans evil by linking all of humanity's souls using it and then installing Nebula Gray into it to corrupt all humans with their darker impulses. However, Nebula's plan was once again foiled by Lan and MegaMan when the duo destroyed Nebula Gray.

Operators

 * Dr. Regal

NetNavis

 * LazerMan.EXE
 * ShadeMan.EXE
 * CosmoMan.EXE
 * BlizzardMan.EXE
 * CloudMan.EXE
 * Dark MegaMan.EXE
 * Dark ProtoMan.EXE
 * Nebula Gray