PT is all about knowing you suck >.>
All 3 pokemon have sub par recoveries, and as Ivy you shouldn't even think of leaving the stage for any reason. All 3 pokemon do however have a high knockback throw that is a reliable KO move.
Squirtle is all mind games, he has no range at all but rivals Wario for aerial mobility. Plays a lot like Wario in the air just weaker. Hydoplaning works for a ko with up-smash from accross the stage, but Squirtles most reliable KO move is D-throw. As for his ground game, I suggets staying in the air. His Up-B is easily edgehogged. =/
Ivysaur can rack some damage with Bullet Seed (neutral b) and can chain into it with a canceled N-air. His b-air has some range and hits twice but doesn't really give any safe space once done. F-air KOes, D-air has a very small spiking sweet spot. U-air KOes but is usaully as telegraphed as his U-smash. F-smash and B-throw are probably the most reliable ko moves. Razor Leaf with an Up-B to punish a jump over it works well. Up-B... easily edgehogged.
Charizard is arguably the best of the bunch. Forward-B when landed right can hit for 40%+ in one hit. Up-B DIed at your opponent out of shield can KO. Insane grab range that can grab-release infinite against a wall. D-throw has a pretty high launch power. All 3 tilts KO when sweet spotted. Which is Charizards biggest problem. Almost everything of Charizards has a sweet spot. F-tilt, his flame. D-tilt, tip of his snout. U-tilt, tip of the wings. F-air, just in front of his snout. B-air, his tail flame. N-air, tail flame. U-air, snout. Charizard is the only one you can kind of leave the stage with, as one of his most reliable kills is his D-air spike which has no needed sweet spot to spike. Aside from that his most reliable KOs are D-throw and D-tilt. Always cancel his jab combo into a grab as the 3rd swing will always miss if your opponent even slightly attempts DI.
My Creations in Modnation Racers! Check zhem!
http://community.modnation.com/en-us/players/IvoYaridovich/creations