Here's my old Meowth Moveset I posted before:
(B)
ay Day:
Hold the (B) button to charge, and let go of the (B) button to throw. The longer you hold the (B)button, the longer the throw time. Unlike the Ball Meowth, he can fire sideways, upwards, and downwards (Which trips easier on both sides of Meowth). The maximum time chargable is a 3 second firing spree. Hold ^ when you're about to let go to fire upwards, and v to fire downwards. In the sky, the coins will be shot all around him, like in the N64.
(B)>: Payback:
He stands straighter, and his claws come out. When hit, he'll slash foward, doing 2x the number of dmg that was to be done. Meowth takes 1% dmg off this attack.
(B)v: Swaggar:
He stomps first, then smirks. As you hold it, the ground under him will vibrate, and he'll be breathing deeply. In this mode, he can deflect projectiles and make them shoot straight upwards. If an opponent is nearby when this move activates, the opponent's left and right movements become confused, and switch every now and then. So, you could be holding left, but you may go right, or maybe left.
(B)^: Aerial Ace
Like Meta Knight, except he doesn't glide. A Glideless shuttle loop, to be exact. But he also has action afterwards (He can still attack and such).
FS: Meowth's Party
He whips out the guitar he played in Pokemon Channel, and plays a miniture version of the song he plays in Channel. Buttons will show up on the top screen. It'll say stuff like, "Press B". Press it in time, and Meowth's Coin on his head will glow. After the song stops, he'll throw the guitar off stage, and then use a more powerful Pay Day, except he's movable in the air, and the coins are bigger and hit harder/have more range. Depending on the song's button-hit, this move can be a OHKO. Enemies are locked by the coins, and then shot left or right.
This pays homage to his Anime appearences, his PokeChannel appearence, and Smash appearence.