Mega Man 5
Mega Man 5, released in December of 1992, is probably the origin of all the "Proto Man is evil!" nonsense, as the story involved Proto Man supposedly taking over the world with eight robots. Of course, it's really Dr. Wily again. The fifth installment of the original Mega Man series is noted for its substandard music and for the introduction of Beat, a powerful robotic bird that proved itself highly useful against the final boss.