Missingno.

Neutral B - Pokeglitch
Missingno. will transform into 1 out of 10 pokèmon. Each attack is chosen by random.


 * Ratatta's Tackle does basic damage to a opponent.
 * Bulbasaur's Leech Seed will shoot a ball of energy forwards, which travels in an arc. If it hits an opponent, they will be damaged, and Missingno. will be healed.
 * Charmander's Ember can cause fire damage and afterburn effect.
 * Abra's Teleport will send you into a random spot somewhere in the stage.
 * Magikarp's Splash will deal 2% damage to anyone hit by it.
 * Pikachu's Thunderbolt can cause electric damage and can stun the opponent.
 * Pidgey's Fly sends you up in the air and drop downward. It deals little damage, and you can't turn or change direction.
 * Squirtle's Bubble does a basic projection attack to a opponent.
 * Jipplypuff's Sing sends opponents to sleep.
 * Golbat's Supersonic stuns anyone in a large radius.

Side B - Substitute
Missingno will summon a Substitute Doll. Anyone who goes near it will be stuck to it. If you hit it with a physical attack, it will explode. If you aim it at an airbone opponent, it will cause a meteor smash. It can be picked up and thrown by Missingno, which will stun the opponent.

Up B - Aerodactyl
Simply, Missingno will turn into a Aerodactyl Fossil and fly into a air as a simply recovery move.

Down B - Buried Alive
Missingno will send a buried hole which can be controlled using the control stick. Then, press B to release a zombie which will poison its near victim for 6 seconds. The poison effect can be passed onto other players (including MissingNo.)

Final Smash - Game Corruption
Missingno will turn into a computer and summon all the pokemons in its Neutral B in said order. Finally, it will send 2 aerodactyls to finish off the smash.

Taunts
Up Taunt: Missingno. flashed the White Hand.

Side Taunt: Missingno. transforms into Ghost and unleashes Mismagius's cry.

Down Taunt: Missingno. transforms into a glitched Golbat and unleashes its cry.

Victory/Lose
Option #1: Missingno. summons a Kangaskhan, which somehow changes into a substitute.

Option #2: Missingno disappears with a sound of Mismagius's battle cry.

Option #3: Missingno has a slide show with a Ghost, a Kabutops Fossil, and a Aerodactyl Fossil.

Lose Pose: Missingno flies around.

Solid Snake Codec
Snake: Otacon, there is a Pokemon walking around here and he's only got 2 dimensions!

Otacon: That's Missingno. He comes from a world where everything is portable.

Snake: Are you kidding me?

Otacon: Nope. Missingno. packs quite a Pokemon Team.

Snake: This is making my head hurt.

Normal

 * Neutral attack - ???
 * Dash attack - Uses Body Slam
 * Forward tilt - Kicks using Bellsprout
 * Up tilt - Hops and pecks as Spearow
 * Down tilt - ???

Smash

 * Forward smash - Throws a Staryu as Boomerang
 * Up smash - Transforms into Primeape and kicks upward.
 * Down smash - Jumps as Magikarp and Slams himself into the ground.

Other

 * Ledge attack - ???????
 * 100% ledge attack - ???????
 * Floor attack - ???????
 * Trip attack - ??????

Aerial attacks

 * Neutral aerial - ??????
 * Forward aerial - Transforms into Ghastly and tackles forward, deals Darkness attack
 * Back aerial - Transforms into Magnemite and shocks backwards, deals Electricity.
 * Up aerial - ???????
 * Down aerial - Transforms into Pikachu his Spining and Sharp

Grabs and throws

 * Grab - Grabs by becoming Arbok
 * Pummel - Uses White hand against the opponent
 * Forward throw - Becomes Machoke and smashes the opponent.
 * Back throw - Becomes and Slowbro and tosses the opponent using Psyquic.
 * Up throw - ???????
 * Down throw - ???????