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Pokemon: any from the turtwig line
Neutral B: leech seed (tosses a seed onto opponent that slowly drains hp for a certain amount of time.
Side B: Giga drain (like robin's down B)
Down B: Earthquake (similar to DKs down B)
Up B: Frenzy Plant (large, powetful roots appear under turtwig/grotle/torterra and fling him like a catapult
Other moves that are used as neutrals, smash attacks, air attacks, etc: bite, crunch, razor leaf, headbutt, tackle, thunder fang, wood hammer. Shield is the move withdraw.