Smart Bomb
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The Smart Bomb is an item found in all five Star Fox games, and is scheduled to appear in Super Smash Bros. Brawl. When the item is thrown, it will explode on the spot, damaging any players nearby. However, the shockwave from the explosion expands after being detonated, and can even hurt the user, if they're close enough. However, on occasion, the Smart Bomb will fail to explode, and will simply lie on the ground until, finally, it unexplodes unexpectedly. Unlike in the actual Star Fox games, the Smart Bomb does not seem to possess the ability to home into the opponent in Super Smash Bros. Brawl.