These are the moves if you are using the Wii Remote and Nunchuk. For example, pressing the B button for Pikachu makes him use the move Electro Ball.
Pikachu Standard Special Move: Thunder Jolt(Not Electro Ball?) Side Special Move1: Skull Bash Up Special Move: Quick Attack Down Special Move: Thunder Final Smash2: Volt Tackle
http://supersmashbros.wikia.com/wiki/Pikachu_(SSBB)
Lucario Standard Special Move: Aura Sphere Side Special Move: Force Palm Up Special Move: ExtremeSpeed Down Special Move: Double Team Final Smash: Aura Storm
http://supersmashbros.wikia.com/wiki/Lucario_(SSBB)
Jigglypuff Standard Special Move: Rollout Side Special Move: Pound Up Special Move: Sing Down Special Move: Rest Final Smash: Puff Up
http://supersmashbros.wikia.com/wiki/Jigglypuff_(SSBB)
Squirtle Standard Special Move: Water Gun Side Special Move: Withdraw Up Special Move: Waterfall Final Smash Contribution: Hydro Pump
http://supersmashbros.wikia.com/wiki/Squirtle_(SSBB)
Ivysaur Standard Special Move: Bullet Seed Side Special Move: Razor Leaf Up Special Move: Vine Whip Final Smash Contribution: Solar Beam
http://supersmashbros.wikia.com/wiki/Ivysaur_(SSBB)
Charizard Standard Special Move: Flamethrower Side Special Move: Rock Smash Up Special Move: Fly Final Smash Contribution: Fire Blast
http://supersmashbros.wikia.com/wiki/Charizard_(SSBB)