Bass or Forte is a Robot Master created by Dr. Wily to imitate Mega Man from Mega Man 7. He has a purple wolf-like robot named Treble, an imitation of Rush.
Appearances
Mega Man 7
Bass made his first appearance in Mega Man 7 before appearing in Mega Man 6. In the intro stage after defeating Mad Grinder. Mega Man must avoid his shots and shoot at Bass. After defeating Bass, he can fight any Robot Master. Bass and Treble appear in Shade Man's stage, later.
During the second encounter, Bass will be in the air and Mega Man must shoot him.
In the 2 player battle mode, players can play as him.
Mega Man: The Power Battle
In the arcade version of this game, Bass later appeared as a playable character in the character select screen. Wily starts to put his robots back to life and Bass teams up with Mega Man and Proto Man to stop his evil plans.
Mega Man 8
Bass first appeared in the beginning of Mega Man 8. Like in his first appearance, Mega man and Bass face off again. Just like it, he must shoot him in order to defeat him. Flash Bomb can defeat him multiple times and Bass then vows never to give up trying to defeat Mega Man before teleporting out.
Mega Man 2: The Power Fighters
Just like the original Power Fighting, Bass teams up with Mega Man, Proto Man and a new robot master named Duo. In his ending, he said that an unknown girl-haired Robot Master (Zero) wouldn't defeat him. During he and Proto Man's ending in Co-op Mode, he tells Proto Man that mysterious behaviour bugs him and he'll battle him after he defeated Mega Man.
Mega Man & Bass
Bass made his reappearance in the game, Mega Man & Bass.
King asks questions to him that he's fighting his lonely beings, like the humans do. He tells that robots are advanced than them.
After defeating King, Bass decides to enter Wily's new lab to challenge him out of anger being decieved and betrayed.
Mega Man 9
Bass never appeared in the game, Mega Man 9. His blueprints can be seen on the computer after Mega Man defeats Wily.
Mega Man 10
Like Proto Man in Mega Man 9, Bass can be downloaded for Wii Points, along with Treble. He can be used to defeat Sheep Man quickly. However, he cannot be selected when players select a character on the select screen. According to the manuals, he said that he's Mega Man's rival.
Other media
Bass made numerous appearances in the mangas and made an appearance in Novas Aventuras de Mega Man.
Trivia
Bass and Treble were the only Nintendo system protagonists to never appear in Ruby Spears' Mega Man.