Koopa Klaw is the Forward B move of Bowser in his Super Smash Bros. Melee appearance. It is a claw swipe that hits enemies farther away, but also causes Bowser to grab onto enemies very close to him. It has the unique ability of allowing Bowser to grab onto an opponent in midair. Also, if an opponent that is close by gets hit, not only will they sustain damage from the swipe, repeated presses of the B button causes Bowser to bite his opponent. Pressing forward on the control stick causes Bowser to slash the enemy upwards, while pressing backwards causes him to hurl the enemy backwards with a large amount of knockback.
This special attack is shared by Giga Bowser.
In Super Smash Bros. Brawl, Koopa Klaw was replaced with Flying Slam, a somewhat similar move.