The Banana Peel (バナナのかわ, banana no kawa) is an item in Super Smash Bros. Brawl. It acts vaguely like a Motion-Sensor Bomb, although its purpose is to stun rather than damage and knockback. It can be thrown like any other regular item, and when someone else steps on it, they fall over and are temporarily stunned. The banana itself flies a short distance sideways, just far enough that if the slipper rolls the wrong way, they will slip again. Diddy Kong's Down Special Move generates Banana Peels even with items turned off, which is an important strategy in tournaments because it often disrupts an opponent's ground game, forcing them into the air. Unlike Banana Peels in the Mario Kart series, these peels do not have faces on them, and do not affect the paths of racing Shy Guys on the Mario Circuit stage.
The peel from a Japanese fiber banana of the Musaceae plant family. It contains a high volume of vegetable oil, which oozes out when the peel is stepped on, making things slippery. In Smash Bros., the peel fulfills its destiny as a comedic prop by making passersby slip. Characters who land on their backsides will be defenseless until they recover their footing.