Well here is my knowledge of the ike matchup as a PT player.
Ivysaur: Since ike does not have a projectile, i find myself using razor leaf alot in order to make the ike approach me. If i predict a jump i like to UpB so he jumps into it for free damage. I use bair alot with ivysaur sicne it outranges most of ikes attacks unless he starts RARing some bairs himself, then it gets too risky for me. I use the nair to uptilt combo alot in order to get ike in the air, since it is hard for ike to approach ivysaur from the air since he has no reliable attacks to go to ivysuar with at that angle, the best bet would be a nair, which is easily stopped with most of ivysaurs attacks, namely Uair. The usualy why i get KOd by ike is a Ftilt followed by edgeguarding to tether hog. Learn how ivysaurs deal with tether hogging and counter that. Ivysaurs save their jump and use a razor leaf to hit the opponent off the ledge then immediately UpBs. To counter this, when he is falling at the same level horizonatally as the ledge go for the hug, this will make the razor leaf not damage you and be able to press L when you see the vinewhip comign at you.
Charizard: Ikes most important resource here is his shield. so dont be afraid to simpy run away from charizard to let your shield come back up. Charizard technically has a projectile but i dont really consider it one. Both of you will be approachign each other in this matchup. If your caught in a flamethrower use both the control stick and the C-Stick to smash DI out of it. This should be common sense but i always see peopel fallign for it, if you are sheidling against a flamethrower, dont roll towards the charizard. roll away, when you roll back you are invincible at the startup but the same cant be said with the foward roll, if you forward roll you will get hit by the flamethrower and be force to Tap DI out of it. Charizard does have an advantage over ike in edgeguarding, his Dair has very deceptive range and can metor smash you. I dont know how you ikes will get past this so thats up for you to decide.
Squirtle: This one is probably the easiest matchup for ike. Squirtle is very very light and you can KO him at aroudn 80%. Be knowledgeable about the differen squirtle ATs and yourll be fine. Spammign nair works alot, if you are currently on the egde use fall off and use UpB again, and the squirtle cant really do anythign about it. so you should have to problems there. At low percents try to make the squirtle approach you, since he can get you in an uptilt lock and finish it off wiht a Uair and Dair combo which causes alot of damage. Once the squirtle is tired he has a very hard time KOing ike, so take advantage of this and force him to Approach you. The squirtle to ivysaur transformation takes long enough that you will be able to get whereever the squirtle is when he is done transforming.
