Roboenza

Roboenza was a robot virus created by Dr. Wily in Mega Man 10. It only infected robots. According to the plot in Mega Man 10, the virus had the added side-effect of making Robots inexplicably violent after a while, and bent on ruling the world. All eight Robot Masters in the game are Roboenza infectees. The main character (Megaman) was later infected, possibly because of fighting the eight robot masters. The character was then able to be given a cure to continue his adventure.