The Smash's name says it all. He likes to smash stuff. Mostly Plants. He doesn't move fast, but he does hit hard. And when his Gargantuar pals join the fight, it's a big ol' problem-o!
The Smash defends early, then builds up brains for enormous Zombies that are almost as big as he is!
With
The Smash is mostly known for using Gargantuar zombies, which means his goal for the win is to be on the defensive at the start, only after which he may turn aggressive as the game progresses. It is best to load up on some tough early-game zombies like Arm Wrestler, Sumo Wrestler or Conehead. The Smash's combination of the Hearty and Beastly classes also has some synergies. For example, he can buff Armored zombies with Loudmouth and stat-boosting tricks such as Vitamin Z, turning them into ironclad tanks.
Since The Smash has access to more Gargantuar zombies than any other zombie hero except for Electric Boogaloo, you can create strategies making use of Gargantuars. One such strategy is using Smashing Gargantuar to give all Gargantuars on the field Frenzy, allowing them to do direct damage to the plant hero should they manage to destroy a plant. Gargologist can reduce the cost of Gargantuars, allowing a Smashing Gargantuar on the third turn. Due to the number of Gargantuar zombies he can use, Gargologist becomes an essential part of most decks you use with him. Cards such as Nurse Gargantuar and even Zombot 1000 are cheaper when it is in play.
Gargantuars aside, The Smash can also play a deadly pet deck. Cat Lady gets more strength for each pet played, while Zookeeper buffs the strength of all pets whenever a pet is played. Camel Crossing is also part of the pet tribe, allowing you to boost the health of all your pets and trigger the abilities of Cat Lady and Zookeeper. Combining these two cards with other pets will do massive damage to the opposing hero or even finish them off before they have a good chance to play cards that can stop them. Alternatively, you can create a sports deck with a few heavy hitters in case of late game, with Energy Drink Zombie being a sports zombie that comes from the Beastly class that only The Smash can use with his sports synergy decks.
The Smash also has the most healing cards of any zombie hero, so use it to your advantage to keep you alive long enough to get out your Gargantuars and other tough late-game zombies. Examples are Medic, Nibble, and Nurse Gargantuar. He also has many instant-kill tricks that can dispose of potential threats, including Locust Swarm, and most importantly, his signature superpower, Slammin' Smackdown. Rolling Stone and Weed Spray may come in handy when the opponent decides to play low-strength plants.
The Smash's only major weakness is his low card draw, as he has not many ways to draw cards. His only reliable means of drawing a card is Terrify. However, this may not be the case if a Gargantuar deck is used, particularly because Gargantuar zombies already have high brain cost.
Against
Take caution of his Gargantuars as they can spell doom as the game progresses. This will only get more dangerous if The Smash plays a Gargologist, which allows him to get them on the field earlier. When this happens, your chances of winning will quickly decrease. Unless you are using a high sun-cost deck, it is recommended to use Template:PvZHLink or Template:PvZHLink to take down his Gargantuars, though only Solar heroes may use either of these. If you are playing as a Kabloom hero, damaging tricks such as Sizzle also work albeit to a lesser extent. Apart from destroying the Gargantuars, you should also destroy any Gargologists as quickly as you can.
Guardian heroes can deal with The Smash's Gargantuars effectively, as they have access to Template:PvZHLink, which can easily clear the field of Gargantuars but also destroy high-strength plants, and Shamrocket, which offers a safer option but can only destroy one Gargantuar. They can also use Template:PvZHLink to prevent dangerous Gravestone zombies from emerging, like Sumo Wrestler, Loudmouth, and particularly, Rodeo Gargantuar. However, since Guardian plants tend to have low strength, be wary of Rolling Stone or Weed Spray.
Strategy Decks
Furry Fiends
Furry fiends are your friend in this Strategy Deck. Pump up Cat Lady's power with Pet-lovers like Dog Walker, Turkey Rider, and Kangaroo Rider. Toss down Octo Zombie and Camel Crossing for a zoological zinger.
x4
x4
x4
x2
x4
x4
x4
x3
x4
x1
x2
x2
x2
All You Can Eat
Unleash Zombies that get a boost out of defeating Plants. Energy Drink Zombie and Vimpire break out their Frenzy powers. Overstuffed Zombie puts on weight after the kill. Meanwhile, Sumo Wrestler and Terrify put Plants in precarious positions.
x4
x2
x2
x4
x4
x2
x4
x4
x2
x4
x2
x2
x3
x1
Gaggle of Gargs
The biggest and baddest wade into battle with this Strategy Deck full of Gargantuar power. Gargologist helps you put bad boys like Defensive End, Smashing Gargantuar, and Wannabe Hero into play faster.
x4
x2
x4
x4
x4
x3
x3
x4
x4
x3
x2
x3
Gallery
Plants vs. Zombies Wiki has a gallery for The Smash.
The Smash's design may be based on the stereotypical Hispanic wrestler, sometimes known as luchadores. This is supported with some references to wrestling, primarily in his missions.
Before the 1.4.14 update, The Smash could use Rock Wall instead of Possessed. This was most likely changed because both Hearty and Beastly can give zombies the Frenzy trait.
Because of this, The Smash now has access to all Frenzy cards in the game.
In the first comic strip of A Schooling at Zombie U, The Smash makes an appearance where he is seen eating a book.
The Smash has access to the most healing zombies and tricks, as well as the most instant-kill tricks, out of any zombie hero.
He shares the same battle music as Template:PvZHLink.
When The Smash is on low health, The Smash appears to facepalm, most likely aiming towards himself.
When a legendary plant is played, the feather on his mask will spin around.
There used to be a bug that happened when the player had the quest "Play 3 Gargantuars", where simply playing as The Smash added 1 to the meter even if you didn't actually play a Gargantuar of any kind. This was later patched.
His head does not appear to be attached properly, as sometimes during his idle animation, it will slightly come off, and he will use his finger to push it back into place.
The Smash is the only Hearty zombie hero that doesn't have a sports zombie-based strategy deck.
This is ironic, as there is a sports zombie in the Beastly class, Energy Drink Zombie, who became craftable before strategy decks were added to the game.
Hearty and 
Beastly classes. His signature superpower is Slammin' Smackdown, which instantly destroys a selected plant with 4
or less.
Hearty, 
Armored zombies with Loudmouth and stat-boosting tricks such as Vitamin Z, turning them into ironclad tanks.
Frenzy, allowing them to do direct damage to the plant hero should they manage to destroy a plant. Gargologist can reduce the cost of Gargantuars, allowing a Smashing Gargantuar on the third turn. Due to the number of Gargantuar zombies he can use, Gargologist becomes an essential part of most decks you use with him. Cards such as Nurse Gargantuar and even Zombot 1000 are cheaper when it is in play.
Brainy
Crazy
Hearty
Sneaky