Pokemon Part II

Buffolant could charge up and use his signature Head Charge for major damage

 Unown could reappear like they did in Melee. Even though it's not a strong or popular pokemon, it's very unique and had a cool effect in Melee

Spheal could use Ice Ball and spit out a bit of ice at an opponent

Alakazam could use Kinesis and bend his spoons to grab an opponent mid-air for you to smash to pieces

 Lickitung could use...take a guess....yeah Lick

 Jynx could use Lovely Kiss to put an opponent to sleep

 Heracross could be a short-range but deadly force with his Mega Horn

 Hitmonlee could use Mega Kick like he did in the original Smash Bros.

 Hitmontop could use Triple Kick and spin around in a circle while kicking anything that touches it

Beedrill could reappear like Hitmonlee from the original Smash Bros. and swarm with twineedle

New Pokemon Part I

 Both Zekrom and Reshiram could use their signature moves, Fusion Bolt and Blaze Bolt

 Farfetch'd is a farfetch'd pokemon, who deserves a pokeball appearance. Maybe he could attack with his leek and use Aerial Ace

 Mr. Mime could create walls using Barrier and reflecting projectiles

 Substituting Blaziken in a pokeball would at least satisfy some fanboys. He could use Blaze Kick

 Marowak could use Bone Club and chuck his club like a boomerang

 Shellder could use Clamp and latch onto someone

 Krabby could use Crab Hammer and slam your enemies

 Diglett could use Dig and pop up to hit someone

Galvantula could use Electroweb to restrain someone