Bass.EXE

Bass.EXE is a mysterious and solitary Navi. He was created as part of a project to develop an independant NetNavi that does not need an operator and could get abilities from viruses and Navis. This is what makes him one of the most deadly Navis in existence. He was blamed for disrupting the Net and was attacked by officials, when in actuality, Alpha was the cause. He survived his attack and used his Get Ability program to keep himself alive and become stronger until he could get his revenge on the humans. Eventually, he stole the Life Aura data from Scilab, and encountered Megaman on the Net, but was defeated. In BN2, he played a larger role in the plot, where the Gospel Netmafia was trying to clone him through the use of Bugfrags. This failed, and the clone mutated into the giant Gospel Megavirus. The monster overcharged the server 600% before Megaman could destroy it. It was later revealed that Wily was behind everything, and was trying to copy Bass in order to free Alpha. Wily allied himself with Bass, who helped steal Alpha's data and the Tetracodes. In exchange, Wily proposed to give Bass the power to attack the humans. Bass smashed and absorbed the Guardian progam, which was the last thing keeping Alpha sealed away. Wily betrayed Bass and let Alpha swallow Bass, but got eaten too. After Alpha's destruction, Bass was near death, but found by a remnant of the Gospel Megavirus, whomerged with Bass and saved his life. Bass consumed at least 200 Bugfrags, courtesy of Megaman, and attacked The Blue Bomber to test this new power. After a close battle, Bass lost, and vanished from the Secret Area. In BN4, Bass resurfaced in the Undernet, and later Black Earth. Megaman accidentally woke the Dark Messiah, who attacked Megaman wielding the power of the Dark Chips. Bass lost again, and fled to Black Earth where he fought Megaman one last time after the defeat of the Dark Soul Navis. In BN5, Bass could be encountered as the Chaos Lord, an amalgamation of the Dark power in the Nebula Area.He also appeared when Rockman gained the power of the Bass Cross.

In the anime MegaMan NT Warrior, he and Gospel where created from data of PharaohMan.EXE by Mr. Wily.