Zomboni

The Zomboni is a zombie (although in the Suburban Almanac is is described as more closely related to a space ogre) riding an ice resurfacer (referred as a Zamboni) with a red Z on it that leaves an ice trail where nothing can be planted. However, a single Jalapeno is enough to both kill the Zomboni and melt the ice.

Overview
Absorbs 75 Normal Damage Shots. Appearance changes occur at 25, 50, and 65 Normal Damage Shots, with heavy shaking around 70 Normal Damage Shots before dying at 75 Normal Damage Shots.

Strategy
Spikerocks and Spikeweeds are really effective against these; they kill the Zomboni in one hit. However, Zombonis are sometimes stacked and can do massive damage against them. Alternatively, one could use a few Gloom-shrooms lined up next to the Zomboni, or an instant kill (Cherry Bomb, Cob Cannon round, Jalapeno, Squash, or Doom-shroom). Potato Mines are a cheap and effective solution, but as always, they must be planted in advance. These zombies have high health and cannot be slowed by Snow Peas and Winter Melons nor be stopped by Butter or the Ice-shroom. The ice trail can't be planted on, but can be eradicated along with the Zomboni with a single Jalapeno. The ice trails also disappear after a certain length of time in Survival: Endless. A Zombie Bobsled Team can also appear later on the ice trail if the trail is not melted in time. Use a jalapeno to melt the trail and prevent the Zombie Bobsled Team from appearing. Zombonis will kill all of your plants in one hit, except the invincible Squash (though said Squash does kill itself along with the Zomboni when it attacks) and the Spikerock, which will take a whopping nine Zombonis before dying. Any Cherry Bombs and Jalapenos that it runs over will detonate, killing the Zomboni in the process. Also, for some reason, Chompers are able to eat Zombonis.

Bobsled Bonanza Mini-game
Spikeweeds and Spikerock are essential in this level, as they will pop the Zombonis' tires. Potato Mines are good for protecting rows at the beginning, but you will want to build up three Spikeweeds per row as soon as possible and upgrade the front ones into Spikerocks whenever possible. Planting a Peashooter or Repeater for the Pool rows eliminate the average zombies. A helpful plant to bring is the Cattail, as they can kill enough of the Zombonis and Zombie Bobsled Teams.

Trivia

 * For some reason, a Lawn Mower can kill a Zomboni, despite the Zomboni being more than twice its size.
 * Similarly, Zombonis can squash plants bigger than themselves, such as the Tall-nut.
 * A Zomboni stops leaving an ice trail when it reaches the slanted part of the roof.
 * For some reason, a Chomper can eat a Zomboni.A sqash can also squash a zombony.
 * However, if this happens, the Zomboni does not appear in the Chomper's mouth but explodes upon being bitten.
 * Sometimes, when it is killed normally (Spikeweeds/Spikerocks, projectiles, etc.), it will flip onto its back, shake, and explode.
 * The Zomboni gets its name from the Zamboni brand of ice resurfacing machines, which function similarly to the machine the zombie drives.
 * In all versions since the "Game of the Year" version, the description for the Zomboni has been: "Not to be mistaken for a Zamboni® brand ice resurfacing machine. Zamboni® and the image of the ice resurfacing machine are registered trademarks of Frank J. Zamboni & Co., Inc., and "Zomboni" is used with permission. For all your non-zombie-related ice resurfacing needs, visit www.zamboni.com!".
 * The Zomboni is the only zombie that cannot be frozen or paralyzed (besides the Zombot and Pogo Zombie) by Ice-shrooms or Kernel-pults.
 * However, sometimes if an Ice-shroom is used when a Zomboni is present, the Zomboni stops making ice. Possibly the ice resurfacer has been frozen solid.
 * According to the Suburban Almanac,the Zomboni is not a zombie, it's some kind of space ogre riding in a Zamboni or ice making machine.
 * The Zomboni's Truck has a Letter Z, which may indicate that he is a zombie.
 * The Zomboni's burnt head is identical to the Catapult Zombie and the Imp.