Aura Sphere

Aura Sphere is Lucario's neutral B in Super Smash Bros. Brawl. Like Mewtwo's Shadow Ball from SSBM, it can be charged, the charging animation has a hitbox that does a small amount of damage, and it can be held in the charging animation after it is fully charged. Unlike Mewtwo's Shadow Ball, it moves in a mostly straight horizontal line when fired, and at a faster speed. Its knockback does not seem to be quite as powerful, however.