A lame Robot Master from a lackluster Mega Man game, Yamato Man appeared in Mega Man 6. Everyone always wonders what Yamato means. Roughly translated it means "worthless loser cunt" which makes Yamato Man actually Worthless Loser Cunt Man. He also has to pick up his spear tip whenever he throws it at you. What a dipshit.
The power that you get from him is also a complete rip-off of Needle Man's power.