I actually made this moveset for Leon in regards to a question weeks ago.
3-hit jab: Leon punches his opponent and then slices his opponent with his trademark knife.
Dash Attack: Leon charges at the oppenent. Think Jill's MVC2 Hype Move, but without the flashy effects.
Tilt Attacks:
Forward Tilt: Pistol Fire. Leon fires his pistol at his opponent like in the Resident Evil games.
Up Tilt: Leon fires his Shotgun upwards.
Down Tilt: Leon does a low leg sweep.
Arieal Attacks:
Neutral Arieal: Leon stabs forward with his knife.
Foward Arial: Leon again fires his pistol forward.
Back Aerial: Leon throws a grenade backwards, exploding at any foes behind him.
Up Aerial: Leon fires his pistol upwards, this time with the upgrade that makes it fire really fast from RE2.
Down Aerial: Leon fires a Rocket Launcher downwards. This is most effect aerial move.
Smash Attacks:
Forward Smash: Leon's signature kick from RE4.
Up Smash: Leon primes a grenade, and then throws it overhead at his opponent as it explodes.
Down Smash: Leon kicks downwards at his opponent, like Ganandorfs kick.
Specials:
*IMPORTANT NOTE* Leon's Neutral B and Special B have Ammo counters, meaning that they can only be used a maximum number of 5 times before it runs out. You will need to reload them using the Ammo selection with the Down B move. This is a reference to Resident Evil's focus on Item Management.
Neutral B: Grenade Launcher. Leon will launch three types of Grenades from the Grenade Launcher. Normal Grenades will ground the opponent (when the opponents are stuck in a hole), Incinerary Grenades will explode created a large fire that engulfs the opponent like Ness's Side B or Simon's Down B, and Flash Grenades will stun the opponents like Zero Suit Samus's Neutral B. Normal, Incinerary, and Flash Grenades are colored Green, Red, and Blue respectively.
Side B: Flamethrower. Leon fires the Flamethower. Like Bowser's and Charizard's Neautral B, but with greater range.
Up B: Desperate Leap. Leon launches himself upwards as he reaches for recover. Does not do damage, but has excellent recover to make up for it.
Down B: Item select. In line with Resident Evil's focus of item management, Leon can choose from three types of items; Herbs, Ammo, and Upgrades.
Herbs will restore 10% of Leon's health, Ammo will reload the ammunition need for his specials, and Upgrades will boost his attack power with firearms (any move that uses Pistol, Shotgun, Grenades, and Flamethrowers). These items also have limited uses, and can be used up to 3 times.
Final Smash: Titan Onslaught. Leon's Final Smash involves the Titan boss from RE2 appearing out of the ground and brutally attacking the opponent. While the Titan is busy attacking them, Leon will pull out his Rocket Launcher from RE4 saying "Game Over!", then fires at both the opponent and the Titan, finishing them off both.
Grab Attacks:
Pummel: Leon pistol whips the opponent.
Forward Throw: Leon preforms the move used to escape from zombies grip in the RE series.
Back Throw: Leon places his foot on the opponents chest, and throws them backwards.
Up Throw: Leon uppercuts his foe into the air.
Down Throw: Leon throw his opponent to the grow, and finishes them with a Grenade throw.
Other:
Appearance: His default outfit is his RE4 outfit, but his RE2 is an alternate costume.
Idel Animation: Leon will reload his Pistol like he does in RE4.
Taunt 1: "What's the matter? Scared?" Leon will twirl his knife as he says this.
Taunt 2: Leon will point his Pistol at his opponent as shout "Freeze!".
Taunt 3: Leon will say "Monsters. After this there'll be one less to worry about."
What do you all think?