Balancing is a disaster.

few characters you missed

iron citron: hit box is broken 

scuba solider: overpowered

takes 60 damage with 2 bullets with the damage upgrade while the tank commander takes 70 with the damage upgrade

druid rose: under powered

needs 35 bullets (rebuff)

Things I don't agree with

hot rod chomper: overpowered: 

speed should be slightly reduced

lil drake: under powered

he has fire and is very strong at close range

All Imp Mechs: Overpowered and Underpowered

no their health should stay a pylon mech with 350 is too much because its fast, lil drake mech with the shield is unstoppable, and the meches already take like 10 with 1 bullet and shoot fast. 

captain sharkbite: underpowered

he is still strong he has a fast rate of fire and only wastes 1 bullet at close range. 

I think this game is in a great place in term of character balance and honestly @FelipeGames2000 has covered this more thoroughly and from an objective point of view.  Essentially the original poster comes in and names three plant classes that he finds overpowered in some way and demands nerfs.  He then proceeds to name I believe almost every zombie in the game 90% of which he thinks are under powered.  He doesn't care to mention plants that are struggling or need help.  Clearly the OP isn't objective and prefers zombies over plants.  I would take what he says with a grain of salt.

The real problem with the game right now is Turf Takeover map balance.

Commando Pea: Many people use it in GW1. However, I don't see anybody playing with Commando Pea in GW2. And he's my least favorite plant too... yes, he needs a buff

Agent Pea: He's actually fine right now. He only needs a better zoom, since he is supposed to be a sniper variant for Peashooter

Plasma Pea: 7 ammo? No! How about 2 for the 1st charge and 3-5 for the 2nd charge?

Hot Rod Chomper: But he IS supposed to be that fast. He even have less health than other Chompers...

Toxic Chomper: I never really paid attention to that. lol

Chomp Thing: But regenerating health after swallowing a zombie is exclusive to Count Chompula. If any other Chomper do that, he will be useless. Maybe a small damage buff will be good enough.

Yeti Chomper: No freezing nerf to Yeti Chomper, please. Only decrease his health (175 => 150) will be more than enough).

Disco Chomper: I don't even have this variant yet... lol

Unicorn Chomper: Yup. His Rainbow Warp needs a small buff.

Shadow Flower: I never really seen a massive difference to her and Sunflower. Not even the firing rate (which it was supposed to be different).

Metal Petal: Agreed

Vampire Flower: Always happened to me before GVP (Graveyard Variety Patch), but now it is fine to me. But if it still happens to other people, it need to be fixed.

Future Cactus: Nope. Her damage is low compared to his GW1 version.

Zen Cactus: Ok. I admit. She needs a reloading nerf. But no nerf to her damage.

Camo Cactus: She really needs those buffs, since the Pirates are better snipers then her.

Citron: Decrease ONLY by 1. Nothing more.

Frozen Citron: Right now, with his freezing nerf, he is the worst freezing variant for the game. No more nerfs to him. Please.

Party Citron: With all those nerfs, he will became OP. Keep the Party Time! meter how it is right now.

Rose: OH HECK NO! > : (  She became USELESS on the GVP! Since then, I've been begging for a small buff to her, and now that she is "playable" again, you want to transform her into trash AGAIN? I WON'T ALLOW IT!!!

Fire Rose: I agree with the damage buff

Frost Rose: Nerf damage only. No firing rate nerf.

Party Rose: Yup. She needs that.

Kernel Corn: Decrease magazine only to 40. I guess that will be enough... for now...

BBQ Corn: His magazine capacity is good right now. -_-

Mob Cob: Same as the regular Kernel Corn

Party Corn: But he's the strongest party variant from the game. He doesn't need any changes

Tank Commander: All I want is to make him stronger than Scuba Soldier

General Supremo: Increase accuracy.

Camo Ranger: Dude. He already have more ammo than Camo Cactus. Why do you want to make him stronger?

Centurion: I guess that he is better to be used as a sniper (despite the fact that Camo Ranger is already a sniper variant for the Foot Soldier)

Park Ranger: He only needs a small damage nerd (decrease damage by 1 or 2)

Mechanic: Ok. Better accuracy = better Mechanic. : D

Painter: He's supposed to be a sniper variant for the Engineer. Only a small zooming and accuracy is needed

Plumber: Yup. Better splash radius is needed for that guy.

Chemist: Now that you mentioned, Chemist really needs a damage buff. But please, no OP Chemist again.

Paleontologist: Decrease long range damage. Now he's balanced : D

Hockey Star: Agreed with overheat buff

Rugby Star and Wrestling Star: Yup. Both needs a damage buff since they have a slower firing speed.

Moto-X Star: Agreed with slowing plants speed by 50% when covered by mud, but that's the only thing he needs.

Tennis Star: All he needs is a health nerf (200 => 175)

Imps: I can only agree with the S.H.R.IMP buffs. All the rest is not good

Captain Pirates: Only agreed with Captain Partyman

Side notes: Fully agreed.

I've also done a small post about balancing. Check it out!

Characters Balancing Features

@the_jeremy823

I'm only doing my best to balance the characters.

the Jeremy_823-not sure which poster you were referring to but Superjesse124 named around 12 PLANTS who he thought were underpowered and needed buffs. He went through a thorough list of both plants and zombies and called out buffs AND nerfs on both sides. He made some excellent points and is right on the money from what I see. I am an original PVZ GW1 player from day one and I definitely see where there are more character adjustments that need to be made.

@Superjesse124

Just a friendly reminder that it helps to actually know and understand the game and its underlying mechanics before calling for buffs/nerf. We've been there already and got our Rose and Citron buffs. And it was not fun.

Camo Ranger for example gets a piercing upgrade, which you could have found out easily by yourself by simply looking at the pinned upgrade thread.

And as already pointed out, Hot Rod Chomper has less HP - which you could have known by simply playing the game.

There are only very few things i can agree on. The BBQ "spray and pray", fast moving projectiles, guaranteed 20 fire damage for example is a real issue for example. And as evidence i can easily pull the masses of (low level) players that play their Maxed BBQs, without even bothering to level anything else. BBQ is simply too easy to play.

And the legendary underdog: the Wrestling Star. Who really deals good damage - IF he could actually hit a thing. Which brings me to the conclusion that it is not his damage output but the projectile speed. Same problem the Commando Pea has, and why people play BBQ. BBQs spray and pray hits, Wrestling Stars or Commando Peas does not.

Which brings me to the Painter. As again understanding the class helps to form an opinion. The Painter is an outstanding Engineer. His projectile is slower but has splash and no damage falloff. He is a weird but effective sniper. He always was. And he does not need a change. 3 hits and most of the plants are on the floor. No matter the distance.

And to end it here i just add a screenshot as an additional argument concerning your opinion about Centurion:

@PurpleKudzu423, you came to the party late.  He modified the post after I called him out.

Not only that he just added a few more plants that he thought were overpowered a even fewer that he thought we underpowered.  I mean look at the detail he goes into with the zombies.  Remember he had like 3 or 4 plants when he made the post.  Then I call him out and he half-heartedly adds a few plants.  I honestly think the original poster only plays zombies or plays zombies most of the time and laments the time he is stuck on team plant.

The game balance isn't perfect but I feel its in a great place.

Turf Takeover - doesn't really matter what team you are, if you are defending the odds are heavily in your favor.  The only exception to this is moon base Z which is the most balanced of all TT maps.  Zombies stand no chance on seeds of time and plants stand no chance on zomburbia.  (by no chance" I mean slim chance)

Suburbination - Zombies win slightly more than plants when I play, I would say the zombies more aggressive skill set helps out a lot in this mode (especially imp punt)

Gnome Bomb - I would say plants win more than zombies in the mode and I'm not sure why.  May come down to abilities and being able to setup a good bit of defenses that are set and forget.  (they can leave the gnome with spud mines, tall nuts, chilli bean bombs, etc in place and leave area to explode).

@Screion @the_jeremy823 Honestly you don't know who you're replying to when calling out @Superjesse124 . I know him very well and he has played GW1 and GW2 more than anyone, has made detailed notes on every character variant and is the most thorough gamer I know. He knows his stats, upgrades, damage, etc all too well. I on the other hand just go out to play and don't get into the details. But Superjesse124 goes over every detail, tests everything, has maybe 95% of all variants at max rank, and has unlocked every legendary character. You made a mistake when calling him out on playing the game or understanding the game and its upgrades. Saying this to Superjesse124 is like telling Albert Einstein to go read a book or go back to school! He first posted his zombie list because those are the notes he finished first and wanted to post them. He added the plants after completing his master list. No need for call outs dude. We all want to see this game arrive at a fair and BALANCED gameplay so we all come here to share thoughts and ideas. But as a good friend of Superjesse124 I had to say something because saying that he needs to "understand the game" is as funny as you saying that to Gary Clay or Justin Weibe. We can respect each other's opinions ok.

@PurpleKudzu423, your argument doesn't make sense.  First of all, he started off with three plants, then followed up with I believe every zombie in the game.  Then added a few more plants here and there afterwards.  I mean if he did zombies first, why were the plants listed first, then all the zombies.....followed up with a much smaller list of plants.  He added all those plants after being called out, and I think your good friend that you are sticking up for can't be that great if he has this much trouble against the plants when he plays the zombies, sorry I'm not having it.  And furthermore since you are such great friends with him you are incapable of being objective.  You're coming in here and being his white knight, which while admirable is pointless.  You say this guy has a lot of notes but I never see him posting on this site and I never saw him post about other issues like TT map balance which a majority of the community agrees needs balancing.  Your best bud who is the Albert Einstein of this game didn't include map balance in any of his amazing notes, but maybe he will add them later like you said because he hasn't finished that part yet.  Honestly when you say routine contributors have no idea what they are talking about it throws your judgement into question.  You don't even know what's happening in this post, like I said earlier you were late to the party when you tried to defend the list and I said he added to it, then several days later you come back in here again.  You didn't even know he listed three plants then the zombies first, then he was called out then added them later.  Then when I call you out you don't even acknowledge over any of my point about his detailed notes in the zombies and how pretty much every plant in this game is OP in someway.

I stand by what I said, he is a zombie fan boy who was called out by me and several other member then half heartedly added some plant  notes just to try to make his post look better, furthermore your incapable of being objective because he is your good friend.