Proto Man, known as Blues in Japan, is the early prototype of Mega Man that made his first appearance in Mega Man 3, under the name of Break Man, to help train Mega Man by fighting him. Beyond their armor and personality, Proto Man and Mega Man are supposedly identical. At the end of Mega Man 2: The Power Fighters, it is revealed by Dr. Light that Proto Man's body has a fatal defect in his energy system, and as a result, is in great pain and has a more limited lifespan. He also appears in the "Navi Mode" of Mega Man 3 in the Mega Man Anniversary Collection to provide gameplay hints to Mega Man. He also fights Mega Man multiple times in that game under the alias of Break Man, being disguised to keep his identity from being discovered by Dr. Light. With the disguise he resembles a red-painted Sniper Joe with two eyes instead of one.