Source: WarioWare
Mona, Wario's hardest working employee, and love interest joins the battle in SSF2! Mona uses many..."unusual" attacks in battle, keeping her opponents guessing and confusing any and all opposition. She has moveset potential based on her variety of jobs (pizza parlor waitress, cheerleader, dumpling stand salesgirl/saleswoman, artifact hunter, ice cream parlor waitress, rock star, detective, fashionista, etc.).
Many of which could take from her microgames from WarioWare itself, such as sniffing up snot, pulling a nose hair for a banana to fly out, directing people to the restroom in a hurry, a marionette deflecting watermelons by flailing its limbs, having a panda balance on a beach ball, a stickman defending himself from attacks with a crayon drawn shield, and many other crazy concepts. She could easily take inspiration from those microgames with the addition of attacks to represent her various jobs. That easily makes her on of the best options to represent WarioWare’s special kind of humor.
So let's run down the list, shall we?
Size - About Princess Peach or Princess Zelda's height, if not a bit shorter.
Idle - Fluffs her large bright orange hair and fiddles with it a bit.
Weight - About as average as it can be for an 16-20+(?) year old teenage girl. Maybe a bit heavier than Princess Peach, and somewhat lighter than Princess Zelda.
Walk speed - As fast as Fox.
Dash speed - About as fast as Ness.
Air attributes - About as good as Wario, but Mona can't perform as many combos as him in the air.
Jump - About as good as Fox.
*By the way, Mona can wall jump.*
Jab - Cupsy Daisy: Mona swings twice with a cup and ball toy with the final hit being a loopable combo.
S-Tilt - Toilet Training: Mona points in both directions with a pair of light signals.
U-Tilt - Balancing Act: Mona tilts her finger up while balancing an umbrella with it. Think of the Villager's U-Tilt in Smash 4.
D-Tilt - Nighttime Allergies: She does a powerful sneeze towards the ground. If sweetspotted, the opponent will be stuck in enough hitstun for Mona to follow up with another attack.
S-Smash - Twirling Stick Smash: Here she grabs her baton and smashes it. If fully charged, Mona will twirl the baton multiple times in front of her before ending the attack. Does great damage.
U-Smash - Cheer Up!: Wears her golden pompoms and pops them upwards in a cheerleading fashion.
D-Smash - Split Kick: Once again, in a cheerleading fashion, Mona performs a split kick. Basically, think of Jigglypuff's D-Smash with WAY more range and less knockback.
Dash Attack - Sweeping Victory: Mona trips, causing her to fall onto her foe. Think of the Black Mage's dash attack in SSF2, or King Dedede's dash attack in the official Smash games, but with WAY less power.
N-Air - Universal Marrionette: She faces the screen and flails all her limbs around.
F-Air - Butterfingers: Mona swipes at her foe with a hot piece of toast. Nearly NO knockback is dealt, but the damage dealt is surprisingly high.
B-Air - Fancy Footwork: Mona kicks backwards at an arc.
U-Air - Boom Box: A white box appears above her. When exposed to a foe, it explodes just like when the firework gets in the box from the actual microgame. Does splash damage.
D-Air - Barrel Roll: Mona does a barrel roll while facing downwards.
N-Special - Hot Slice: Mona tosses a slice of pizza at her opponents at high speed. The toppings determine the damage.
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Cheese (60% chance)=Low damage
Pepperoni (20% chance)=Medium damage
Supreme (10% chance)=Heavy damage
Hawaiian (5% chance)=Severe strike
Anchovies (5% chance)=Poison effect
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S-Special - Moped Rush: Mona summons her scooter and rides it an any direction. The faster it moves, the more damage and knockback it will cause. She can hop on or off whenever she needs to. It will disappear after a while or be destroyed. It's slightly faster than Wario's bike, and cannot tank as many hits as it.
U-Special - Monette Rope: Mona raises out her arm as a few Monettes (3) to reach out diagonally. If the last Monette grabs a ledge, Mona blows her whistle and her minions would pull her to the ledge. It is a tether recovery moves like Olimar's Pikmin Rope, but the number of Monettes appear at random to make it a risky move. Three would be 50%, two would be 35%, and one would be 15%.
D-Special - Pet Summon: Mona blows on her whistle to summon at least one of her trusty pets to aide her in battle momentarily. Piggy (50%) would kick soccer balls at his foes. The elephant (35%) would squirt sludge to damage and shove his foes away in a large squirt. The Chimp (15%) would launch a banana peel to trip anyone in the way or who walks onto it. Each pet can only attack a few times until they disappear or die easily in one hit.
Grab - Pyoro: She uses the infamous red bird to grab the foe with his long sticky tongue.
Pummel - Hand Me Down: She whacks the foe with a leek.
F-Throw - Crash Test Dummy: She inflates an airbag to knock the foe away.
B-Throw - Paper Plane: Mona tosses her foe backwards with the addition of a paper airplane for more damage.
U-Throw - Fan Boy: She tosses her opponent above her, making them float by fanning a large paper fan before striking him/her with it afterwards.
D-Throw - Swap Team: Mona notices a fly on her opponent's face and smacks his/her face with a flyswatter out of fear.
FINAL SMASH - Rock Out!: Mona faces the player and takes out her guitar to rock out with her band members, the Hot Slices. This lasts for 15 seconds. Dodging isn’t easy. Each strum emits a large orange soundwave to shock near by players. The more she strums the bigger the waves get. When it's over Art and Decko would disappear and Mona would put away her guitar.
U-Taunt - She twirls her baton and says: "Let’s go!"
S-Taunt - Mona pulls out her camera and takes a few selfies before putting it away.
D-Taunt - She does her 'See ya!' farewell pose.
Victory animation 1 - She steps off her scooter and "delivers" her pizza with a smile. No matter what kind of costume. She says while delivering: "Here's your Pizza!"
Victory animation 2 - She twirls her Baton and throws it up. Then catches it and makes a Peace sign. One leg is lifted. No matter what kind of costume.
Victory animation 3 - She jumps up and down and says: "Yay! I won!"