SWN-001 Bass, Forte (フォルテ, Forute) in Japan, is a robot designed by Dr. Wily. He was constructed based on research conducted on Mega Man with the intention of matching his power, being a more advanced model of Robot Master when compared to Mega Man. Wily makes mention of discovering the energy that powers Bass, Bassnium, the most powerful form of energy on Earth, entirely by mistake. Despite being created by Wily and being more competent in his abilities, Bass frequently rebels against his creator when he feels Wily is standing between him and defeating Mega Man. He desires to defeat Mega Man and be acknowledged as the world's strongest robot. Though he wants to defeat Mega Man, Bass has worked together with him numerous times, though usually for his own purposes.