It is Mario's first Fire-type move used in the game and he learns it at level 3. To use this move, the player must repeatedly press the Y button as Mario hurls fireballs at a single opponent. This move requires five Flower Points to use. It is also the very first new move that Mario learns through leveling up.
With Fire Orb, Mario is able to damage a single enemy for fire damage. This is useful against insect and plant-based enemies but will barely do anything to other fire enemies.