GutsMan.EXE is a NetNavi from the Mega Man Battle Network series operated by Dex Oyama. While not very bright, he is a super strong Navi that relies on brute force. He likes Roll.EXE and is MegaMan.EXE's rival. He also has the habit of frequently saying the word "Guts". For Dex, having a "strong" Navi means they have super strength. GutsMan is a loyal friend and fights side by side with his allies.