This custom Lego minifigure is from the video game series Mega Man and first appeared in Mega Man 7. Not many Lego Bass minifigures have been created by custom Lego builders. Bass is a humanoid robot created by Dr. Wily and has a robot wolf named Treble.
The arms, legs, arm cannon, helmet, and body have custom labeling. The arm cannon is a Lego head with poster putty on the inside to hold it on the arm.
Creative Brick Building 