The NetNavi of Eugene Chaud, ProtoMan.EXE is is one of MegaMan.EXE's greatest rivals and Proto Man's Battle Network counterpart. Completely loyal to his NetOp, he follows every one of Chaud's orders to the letter and the pair have excellent synergy due to the extensive time they spend practicing every day. Although his ruthless tendencies initially rub Mega Man and Lan the wrong way, Proto Man eventually becomes one of Mega Man's closest associates and most trusted allies. Nevertheless, the crimson Navi tends to chastise his blue counterpart for being too naive and trusting at times, but they generally come to an agreement by argument's end.