Jab Combo: Same
Up-Tilt: Leaf Uppercut. Taken from the Leaf copy ability from Kirby’s Return to Dream Land, Kirby does a quick uppercut using a pile of leaves, visually similar to Bayo’s Smashes. It’s very quick, but quite low in knockback.
Side Tilt: Broom Clean. Kirby uses a broom from the long forgotten Clean copy ability from KDL3. He swipes in front of him. It has low damage but has a windbox
Down Tilt: Balloon Burst. Kirby brings Triple Deluxe’s Circus to town! He makes a balloon and inflates it until it pops. Like in TD, it can change shape, though it has no impact on damage.
Dash Attack: Burning Dash. From more games than I can count, Fire’s dash attack/ Burning’s attack returns from Melee! It functions just as it does in the games, sending Kirby quite a bit further forward and dealing some Fire damage to whoever it hits.
Neutral Air: Twinkle Star. Same
Front/Back Air: Freezer Sparkle. From Ice Kirby’s midair attack in most Kirby Games, Kirby spews snow around him and spins rapidly. At higher percents it can freeze.
Up Air: Needle Stab. Coming from the rather forgettable Needle copy ability, Kirby stabs at the air above him.
Down Air: Stone. Near 1-to-1 his old Down-B from midair.
Up Smash: Geyser. Taken From Water from RTDL, it has a long hitbox right above Kirby.
Side Smash: Hammer. Similar to his old Side-Special, it does a lot of damage but has large lag.
Down Smash: Mirror Split: Mirror Kirby from Super Star and Robobot’s signature attack. Kirby has two Mirror images appear on both sides to deal damage. There’s decent range as well as invincibility frames while attacking
Neutral-B: Inhale. Changing this would be insane
Side B: Poison Ride. Using the Poison ability from Robobot, Kirby rides around on a Toxic pile of sludge like in Sonic’s Spin Dash, Yoshi's Egg Ride, and similar attacks. It’s slower than those attacks, but it leaves behind puddles of poison that deal damage.
Up B: Missile. Using the aforementioned Missile ability from Amazing Mirror, Kirby turns into a Missile in what can only be described as a supercharged variant of Villager’s Up B. Missile Kirby can dart around the stage quite easily, but he’s very difficult to control and he has no brakes.
Down B: Unstable Formula. Using the Doctor Copy ability from Robobot, Kirby starts to make a potion, randomly selected from four. It takes a few seconds to charge, but after that he can use it whenever. The fire one does the most damage, but has the smallest hitbox. The ice one has a larger hitbox and can Freeze, but deals less damage. The Electric one has 4 projectiles fall out of the bottle. Each projectile goes far, but does less damage. An opponent can get hit by multiple projectiles, if they touch all 4 it’s almost as much damage as the fire attack. The healing potion appears very infrequently, but heals 30%.
Final Smash: Hypernova. Using the Hypernova ability that debuted in Triple Deluxe, Kirby turns a rainbow color and starts inhaling rapidly, attempting to consume anything "close" to him (Close is about half of Palutena's Temple). If Kirby inhales someone, they take a lot of damage. Afterwards, Kirby spits out a giant star, which gets bigger depending on how many things he inhaled.