Bass

Bass is a recurring villain from Megaman.

Story
After being defeated so many times by Megaman, Dr. Wily studied Megaman's blueprints, in hopes of creating a similar robot. During his research, he accidentally developed a powerful energy source that he called “Bassnium”. With this new energy, he was able to create Bass. Believing that someday he might get arrested, Wily programed Bass and other robots to look for him in case he went missing for too long. After Wily remains in jail for three months, Bass wakes up and starts looking for Wily, releasing him from the prison with little effort. As Megaman gives chase to Wily, he meets with Bass, and the two have a brief fight. Bass deceives Megaman, making him believe he was an ally. Later on, Megaman finds Bass again, seemingly wounded. Megaman invites him to go to Dr. Light's lab for repairs. Once in the lab, Dr. Light repairs him and makes some enhancements on him. As a way of thanks, Bass blow up the lab, revealing his true intentions. Wily mocks Megaman for being too naive, since Bass was his creation all along. Megaman goes after Wily in his new Skull Castle, finding Bass again. Megaman defeats him, but he simply retreats. He finds Bass once again, but this time Bass fuse with his pet robot Treble, so Megaman fuses with Rush for a even fight, defeating Bass once again. Later on, after Megaman defeats Dr. Wily, Bass appears and rescues Wily.

Bass starts distrusting Wily, rebelling against him and deciding to defeat Megaman by himself. Although he had many attempts, he never managed to defeat Megaman. Wily then starts doubting Bass's abilities, so he creates a powerful robot named King in order to test Bass. But King rebels against him, starting a war of his own. Disgusted, Bass goes after King just to prove himself, getting really mad when he discovers that was Wily who created King. He goes after Wily and defeats him, so Wily reveals his plans, also revealing that he had a plan for a new King. But, before he had a chance to show him, Protoman appears and destroys the computer with the plans. Wily demands that Bass attacks Protoman, but he refuses to obey, saying that he don't get orders from anyone.