Claw

Claw (クロウ), also known as Snapper in the Mega Man 2 instruction manual for the U.S., is a small crab robot that was originally used in a Robot Carnival before being modified to be part of Dr. Wily's forces.

Mega Man 2
Claws only appear in the final section of Bubble Man's stage. They appear slowly from above. If they land on a platform, they leap once and roll slowly toward Mega Man.

Mega Man: The Wily Wars
Claws appear in Mega Water S's stage.

Hits Data Chart
Amount of shots/hits from Special Weapons it takes to destroy a Claw.

Other media
Claw has a brief apperance in the manga Rockman: Dr. Wily no Inbou.

Trivia

 * Claw was one of the enemies to appear in the cancelled game Mega Man Universe.
 * In Mega Man 2: The Power Fighters, Bubble Man can summon unnamed crab-like robots (presumably Claws) to assist him.