Bowling Ball Boss is a boss character, so expect him to be hard. He can summon out "Bart Devils", which can continue doing lightning attacks until you hit them (which is hard to do). So beware of that.
Hovering the mouse cursor over the Command Input icons will display text that refers to the inputs set in M.U.G.E.N's Key Config.
Icons encased in square brackets [ ] require the respective button(s) to be held down. Hovering the mouse cursor over the icon displays the hold duration if applicable.