Luigi’s Fireballs travel through the air, as opposed to bouncing on the ground. Sweetspot a Super Jump Punch to do the Fire Jump Punch, which deals high knockback and damage. The chargeable Green Missile can misfire. A misfire deals more damage but may send Luigi further than desired. Tap the Special Attack button repeatedly during the Luigi Cyclone to gain some vertical height.
*All pictures of moves for all characters are gathered from official sources and from pictures and videos without detailed explanations, and some are subject to change.