WALUIGI SERVES UP A FIGHT
Normal Attacks:
Jab: A two strike move, where Waluigi takes his tennis racket and does two quick strikes. One from the left, one from the right. Each swing is punctuated with a "Waa."
Dash Attack: Waluigi lunges forward and dives at the opponent with arms outstretched, grabbing for their ankles. This move may cause the foe to trip, as Waluigi takes them to the ground with him, but it relies on good spacing so that Waluigi's arms line up with the foe's legs. A risky move, as it has notable end lag, but it's offset if the foe trips, as they'd need to get up before striking back.
Side Tilt: Waluigi does a soccer-style kick upwards, and pressing side tilt again causes his foot to come back down in an axe kick motion. The first hit is punctuated with a Waa.
Up Tilt: Waluigi points skyward and swings his hip, performing the Disco Finger move. Hitting this move again will have Waluigi withdraw his finger, which has an additional hit box. Up tilts can be chained together for a combo move as Waluigi dances.
Down Tilt: Waluigi crouches down and crosses his arms in front of his chest, extends one of his legs outward and spins while sitting on his other foot. There's a name for this dance move but I don't know what it is, but you bet your bottom dollar Waluigi knows what it is.
Aerial Attacks:
Neutral Air: Waluigi performs a split in mid air, launching foes that hit his feet completely horizontally, not unlike Jigglypuff's down smash (though obviously far less powerful...Waluigi can only cheat so much).
Forward Air: Waluigi uses his tennis racket and spikes the foe, sending them downward. There's a bit of a startup here as Waluigi aligns his shot, but otherwise it's a fairly standard forward air dunk.
Back Air: Waluigi swings his body around in a three strike maneuver. First he hits with a backhanded racket swing, then his right leg, and finally his left leg.
Up Air: Waluigi pulls a potted Piranha Plant out of hammer space and holds it upward. It chomps three times before Waluigi puts it away, with the third chomp inflicting higher knockback. A three strike move.
Down Air: Cheating physics once again, Waluigi stays right where he is in the air and stomps the "ground" twice, Waa-ing angrily and somehow kicking up a dust cloud. Can be used to stall Waluigi's fall.
Smash Attacks:
Side Smash: Waluigi takes a running start before smashing his racket into the foe, sending them flying. This is Waluigi's best kill move, showcasing his tennis prowess. The longer the move is charged, the further Waluigi runs before striking.
Up Smash: Waluigi pulls out what looks to be a baseball. He then tosses it skyward, not unlike Snake's up smash, where it's revealed the baseball is simply a crudely-painted bomb that Waluigi snuck into the battlefield. It explodes on impact. The charging animation involves Waluigi quietly laughing to himself as he tosses the ball lightly up in the air and catching it.
Down Smash: Waluigi pulls out a small yellow and black remote control with a big red button on it. Upon releasing the move, Waluigi pushes the button, causing the ground on either side of him to blow up. That's right, Waluigi is very thorough in his cheating. He planted remote bombs inside the stage just for this purpose. The charging animation features Waluigi taunting the foe, muttering "I'm gonna press it!" while hovering his finger over the button.
Grab, Pummel, and Throws:
Grab and Pummel: A standard grab, with the pummel involving Waluigi bashing the foe overhead with his racket. Each pummel is punctuated with a Waa.
Forward Throw: Waluigi pulls a full sized cannon out of his pocket, stuffs the foe inside, and fires them away.
Back Throw: Waluigi twirls around and tosses the foe as one would a frisbee, waving at them as they go. "Bye bye, loser!"
Up Throw: Waluigi swims skyward, holding onto the foe, before lobbing them up.
Down Throw: Waluigi leaps onto the foe as both are covered in a cartoony fight cloud. Waluigi emerges victorious as the foe bounces off the ground.
Special Attacks:
Neutral Special: Rally/Zone Shot - If the button is pressed, Waluigi tosses a tennis ball up and whacks it with his racket, sending it hurdling forward. A rally then starts. The opponent is able to knock the ball back at Waluigi, but it returns to him slightly slower than how he launched it. Combined with his near lagless neutral special, Waluigi can send the ball back at blazing speed, and it gains a minor homing effect. This makes it easier for Waluigi to reflect it and harder for the foe to dodge it. Waluigi can hit the ball back at the foe twice (not including the initial serve), but on the third attempt, Waluigi's racket shatters as he stares at it in disbelief, leaving him susceptible for a counter as he pulls a new racket from hammerspace.
Side Special: Fake Item Box - Waluigi pulls out a fake item box from the Mario Kart series and lobs it overhead, letting it land on the stage. It stays there for about the length of one of Diddy Kong's banana peels before disappearing. If an opponent is hit by the box or runs into it while it's on the stage, they get stunned for a bit and take electrical damage, allowing Waluigi to come in for the kill. This move showcases Waluigi's trickery and deception.
Up Special: Air Swim - One of Waluigi's most iconic, and arguably strangest, abilities is his ability to cheat logic and physics themselves and swim through the air. It's an ability he's had since his debut in Mario Tennis, and it makes for the perfect recovery move in Smash. Waluigi propels himself in the direction the control stick is held, being able to perform upward to three strokes. In application, it's somewhat like Greninja's Hydro Pump or Pikachu's Quick Attack. It doesn't go as far, but it causes quite a bit of damage in comparison.
Down Special: Bomb Launcher - Waluigi pulls out a pitching machine and plants it on the stage, which he can then use as a turret of sorts. Pressing the button next to it has Waluigi yell "Fire!" and launch an explosive out of it. As well, while Waluigi is yelling "Fire!" the player can still control the bomb's trajectory mid-flight, referencing Waluigi's penchant for cheating, as well as things like the Liar Ball from the Mario Baseball series, where this sort of illusionist trickery isn't something Waluigi is above.
Final Smash: Whirluigi - Waluigi begins to dance as a spotlight shines on him. Eventually he begins to rapidly spin, putting him in the eye of a massive tornado. The player takes control of this tornado and can move it around the stage, picking up enemies, trapping them, and shooting them outward at the end of the move. Waluigi then stops spinning and strikes a pose.
Special Gimmick: Waluigi Time!
Waluigi's love of cheating is only beaten by Waluigi's love of himself. Boastful and quick to jeer his opponents, Waluigi is known for his flare for the dramatic. As such, Waluigi gets a small boost in power if he taunts after KO-ing an opponent, and a slightly larger boost if he does well enough to warrant a crowd cheer. A smaller gimmick that isn't as noticeable in the heat of battle, not unlike Bowser Jr.'s knockback resistance when hit from below, but it could help in a pinch and fits Waluigi's personality.
Side Taunt: Waluigi poses as he tosses a rose behind him. This actually does damage, as well, for every rose has its thorns.
Up Taunt: Waluigi tosses his head back and raises his arms as he laughs maniacally.
Down Taunt: Waluigi performs his infamous crotch chop.