Shupponpon

Rail Grinder is the train enemy of Mega Man 8 and Mega Man and Bass. In Mega Man 8, they emerge from certain tunnel-like doors in Clown Man's stage. In Mega Man and Bass, they emerge from hidden tunnels in Magic Man's stage. In either case, they ride on tracks and damage Mega Man if they hit him with the front. But Mega Man can ride on them safely if he stands on the platforms on their heads.