Blues

Blues (proto) and Rock (Mega): Friend or for type of relationship. even though Blues is his older brother, he isn't quite as nice.
Blues (proto) and Roll: They don't talk to each other much, but they respect each other, since Blues is her older brother.
Blues (proto) and Bass: They don't talk to each other much, but they respect each other.
Blues (proto) and the doctors (Wily and Light): bitter. he does NOT like them. he hates them.

Proto Man (Blues) is calm, cool, collected in any situation. He is also shown to be greatly independent. As someone who values his individuality so much, he risked body failure just to avoid becoming someone else. He also despises others who were either made in his image or were based off him in some way. either way, he's always seen as a friend or foe to Rockman (MegaMan). He is obviously older than every robot master and he might say that he's not a kid, but he's 14 of somewhat around that age of AI. Even that, he is the first Robot Master!

Proto Man appears similar to his younger brother, Mega Man, having a similar frame and build although the differences are immediate. Proto Man wears vibrant red armor that sharply contrasts that of Mega Man's blue, as well as having a dark gray body. He wears a stylized helmet that features a distinct white trim that points upward. Along with his trademark flowing yellow scarf and thick black visor makes Proto Man fit the mysterious dashing lone wolf archetype quite well. Like Mega Man, Proto Man has been seen without his helmethis hair is longer, featuring a distinct, long fringe that stretches forward and curves slightly upward