Shield damage is an effect that certain attacks in the Super Smash Bros. games have. While they are mostly normal attacks, they deal bonus damage when their hitboxes connect with a shield. For example, Donkey Kong's Headbutt will do more damage to an opponent's shield than his Forward Smash since its hitbox has shield damage, despite the latter containing a much more damaging hitbox. The only attack with significant shield damage in Melee was Marth's Shield Breaker, which when fully charged, could break a full shield. In Brawl, quite a few attacks were given hitboxes with the effect. However, most such attacks do not have a high value for it.