Firework

Firework is an original item introduced in Super Smash Flash 2. When it comes into contact with a wall or a character, the firework will explode and divide into multiple fireworks, up to nine. If the firework is thrown and it doesn't connect with anything, they will keep flying in a circle motion, and then will explode, after a few seconds.

Trivia

 * Firework is the first original item to be included in Super Smash Flash 2 and in the overall Super Smash Flash series.
 * The item's idea was taken from a similar item (Fusion Bomb from Ratchet & Clank) that is present in PlayStation All-Stars Battle Royale, a game that has similarities to the Super Smash Bros. franchise.