Bomb Shells is a NEW Bro Item used by the Wario Bros. in Mario & Luigi: Sibling Rivalry. The basic attacks is the same as Green Shell. You kick the shell at your opponent and it's the other bro that kicks the shell back and forth. The only difference between Green Shell and Bomb Shell is that when you kick the shell at the opponent the shell explodes but it still moves and slides to the other brother. The explosion causes a lot of damage.