Luigi (SSB4)/Back aerial
A dropkick. It comes out frame 6, while its clean feet hitbox has both an impressive damage output, and very high knockback growth. These traits make it one of Luigi's most viable KOing options, as its clean feet hitbox KOs middleweights at 99% while near edge. It is also useful for approaching when used as part of a reverse aerial rush. It is a good follow up after a sourspot up air, depending on directional influence. Like forward aerial, its clean legs and late hitboxes are positioned slightly around Luigi's body up to his front side, and have the same quirk of launching the opponent in the opposite direction if the body portion of their hitboxes hits them.