Protoman is a badass partner of megaman and prefers to use his sword instead of weapons.
ProtoMan is the elite NetNavi of Eugene Chaud (Chaud Blaze in the English anime, Enzan Ijuuin in the Japanese version). His Navi mark, a circle split with a thunderbolt pattern into two black and white sections, can be seen on ProtoMan's chest and gloves, as well as, in the games but not in the anime, on the back of Chaud's vest. Unlike his original counterpart, he normally uses a sword weapon instead of a buster, although he does use a shield reminiscent of the original Proto Man's, and does have a buster weapon when the player activates the Double Hero Program Advance and when he's player-controlled. In virtual centimeters, ProtoMan stands at 161 cm (roughly 5'3").
ProtoMan's most defining character trait is that he is completely loyal to his NetOp, Chaud, and will follow any order given to him. He is also willing to sacrifice himself for Chaud. The two work together very well since they practice so many hours a day. In the anime, it is shown that ProtoMan was Chaud's best friend as a child when he received him as a gift. ProtoMan is also serious and doesn't talk much, but not to the point of being socially isolated like his NetOp.