I gave each special move an EX version like in Street Fighter just for fun.
Fireball: Quarter-circle forward + Punch (EX: Fire Orb)
Cape: QCF + Kick (EX: Shocking Cape)
Super Jump Punch: Shoryuken motion + P (EX: Explosive Punch)
Mario Tornado: QCB + P (EX: Mario Hurricane)
F.L.U.D.D.: Down x2 + P (EX: Scalding F.L.U.D.D.)
Mario Finale: QCF x2 + P
Fireball: QCF + P (EX: Ice Ball)
Green Missile: Charge Back > Forward + P (EX: Quick Missile)
Super Jump Punch: SRK + P (EX: Fiery Jump Punch)
Luigi Cyclone: Rapidly press P (EX: Clothesline Cyclone)
Negative Zone: QCF x2 + P
Poltergust 5000: QCF x2 + K
Giant Punch: Charge Back > Forward + P (EX: Lightning Punch)
Headbutt: Charge Back > Forward + K (EX: Stubborn Headbutt)
Spinning Kong: Charge Down > Up + P (EX: Kong Cyclone)
Hand Slap: Rapidly press P (EX: Hot Slap)
Konga Beat: QCF x2 + K
New Final Smash: QCF x2 + P
Bow: QCF + K (EX: Power Bow)
Boomerang: HCF + P (EX: Ripping Boomerang)
Spin Attack: SRK + P; hold to charge (EX: Shocking Spin)
Bomb: QCB + P (EX: Meteor Bomb)
Hookshot: HCB + K (EX: does more damage)
Triforce Slash: QCF x2 + P
Ancient Bow and Arrow: QCF x2 + K
Charge Shot: QCF+ P; hold to charge (EX: Melee Charge Shot)
Missile: QCF + K (EX: Super Missile)
Screw Attack: Charge Down > Up + P (EX: Apex Screw Attack)
Bomb: Down x2 + K (EX: Mega Bomb)
Grapple Beam: HCB + K (EX: Does more damage)
Zero Laser: QCF x2 + P
Egg Lay: HCB + P (EX: Lick)
Egg Roll: QCF + K; hold to charge (EX: Light Egg Roll)
Egg Throw: QCF + P (EX: Timed Egg Throw)
Yoshi Bomb: SRK + K (EX: Crushing Bomb)
Super Dragon: QCF x2 + P
Inhale: HCB + P (EX: Jumping Inhale)
Hammer: QCF + P; hold to charge (EX: Giant Hammer)
Final Cutter: SRK + K (EX: Upper Cutter)
Stone: Down x2 + K (EX: Grounding Stone)
Cook Kirby: QCF x2 + P
Ultra Sword: QCF x2 + K
Blaster: Rapidly press P (EX: Impact Blaster)
Fox Illusion: Charge Back > Forward + K (EX: Wolf Flash)
Fire Fox: SRK + P (EX: Twisting Fox)
Reflector: Down x2 + K (EX: Amplifying Reflector)
Landmaster: QCF x2 + P
Ultimate Final Smash: QCF x2 + K
Thunder Jolt: QCF + P (EX: Thunder Shock)
Skull Bash: Charge Back > Forward + P (EX: Shocking Skull Bash)
Quick Attack: SRK + P, then any direction + P (EX: Meteor Quick Attack)
Thunder: SRK + K (EX: Thunder Burst)
Volt Tackle: QCF x2 + P
Rollout: QCF + K; hold to charge (EX: Raging Rollout)
Pound: QCF + P (EX: Pound Blitz)
Sing: Down x2 + P (EX: Hyper Voice)
Rest: HCB + K (EX: Wakie Wakie)
Puff Up: QCF x2 + P
Falcon Punch: QCF + P (EX: Mighty Falcon Punch)
Raptor Boost: QCB + P (EX: Heavy Raptor Boost)
Falcon Dive: SRK + P (EX: Explosive Falcon Dive)
Falcon Kick: QCB + K (EX: Lightning Falcon Kick)
Blue Falcon: QCF x2 + P
PK Flash: QCF + P; hold to charge (EX: PK Freeze)
PK Fire: Charge Back > Forward + P (EX: PK Fire Burst)
PK Thunder: HCF + K (EX: Rolling PK Thunder)
PSI Magnet: Down x2 + K (EX: PSI Vacuum)
PK Starstorm: QCF x2 + P