Luigi (SSBU)/Neutral attack/Hit 1
Luigi throws a quick jab with his arm farthest from the camera. It is Luigi's fastest grounded option at frame 2, and can make for a somewhat safe poke in neutral. It is possible to hold the attack button down to repeatedly perform the move, making it a safe way to deal with spotdodges, techs in place, or stuff out short-ranged grounded approach options. It is also used to jablock opponents, however the small hitboxes can cause the move to whiff on skinnier characters, provided they don't bounce from the missed tech animation. It leads into the second hit very reliably.