Mr. Game & Watch (SSBU)/Down special
Colloquially known as "The Bucket", this move is Mr. Game & Watch's primary defensive tool against projectiles which resembles his game Oil Panic. This move will absorb any energy based projectiles that come into contact with it and due to its very large absorbtion hitbox, it can absorb projectiles even if Mr. Game & Watch is holding the bucket away from it. Upon successful absorbtion of a projectile, Mr. Game & Watch will enter a 24 frame animation where he is completely intangible. Each projectile absorbed will fill the bucket with one unit of oil whereas more powerful projectiles will fill it will two units of oil. The move can absorb three projectiles at the most, meaning the bucket can hold a max of three units of oil before it is full at which point it becomes an attack. The "Oil Spill" part of the move can be a devastatingly powerful attack depending on the power of the projectiles that were absorbed. At max power, it can shatter full shields and even OHKO light or middleweight characters at the ledge and will OHKO every character in the game at the ledge if Mr. Game & Watch has rage. The startup of the spill comes out almost instantaneously at frame 2 and is a very large disjoint. Once the spill attack is used, the bucket becomes empty and will be able to absorb projectiles once again.
The move has also gained a buff in Ultimate. Unlike previous games where the move was useless against physical projectiles, the bucket now acts as a reflector against non absorbable projectiles which makes the move fantastic for forcing approaches as well as allowing Mr. Game & Watch to have great matchups against zoning and projectile based characters. The reflector is rather weak however, and will not amplify the speed or power of the projectile it reflects. Its hitbox is also rather small, unlike the absorbtion hitbox which works no matter what direction Mr. Game & Watch is facing, the reflector will only work if the bucket is facing the projectile. Nevertheless, its extra utilty as a reflector alongside its absorbtion properties is very useful.
Lastly, the move has one more use that is rather niche. The bucket can be used to boost the height and coverage of Mr. Game & Watch's double jump as well as stall his momentum in midair. This can be performed by using the move once while in the air, then putting it away and using the move again at the same time the player uses their double jump. This "bucket jump" technique can be used to ameliorate his otherwise low double jump.
The move has amazing versatility overall and is one of the most useful moves in Mr. Game & Watch's toolkit.