Not to be confused with Spark (Enemy).
Spark is Stafy's default abillity in Super Princess Peach Wii. It makes a few sparks shoot out of Stafy. This is usefull as they can be shot in any direction. To use it, you must press "A" while holding Stafy.
It is also an ability in Kirby's Quest. You get it after swallowing Sparky Sr., Sparky Jr., or a Sparky.