Zombot Plank Walker

The Zombot Plank Walker is the boss of Pirate Seas in Plants vs. Zombies 2: It's About Time. It is controlled by Dr. Zomboss, and is battled in Pirate Seas Day 25. It somewhat resembles the Egyptian variation of Zombot with minor modifications.The fight was added in Version 2.0.1.

In the battle, it can summon all Pirate Seas Zombies except for the Pirate Zombie, Seagull Zombie, Swashbuckler Zombie, Flag Pirate Zombie, and the Imp Cannon; the last probably because it can fire Imp Pirate Zombies by itself. The plants given via the conveyor belt are Kernel-pults, Snapdragons, Threepeaters, Coconut Cannons, Spikeweeds, and Cherry Bombs.

Almanac Entry
TOUGHNESS:  Undying

SPEED: Hungry

The plant plundering privateer of the high seas.

SPECIAL: cannon can rain down imps past your defenses

"Hoist the mizzemast, batten down the hatches!  15 zombies on a dead man's boat, yo ho ho and a bucket of brains!" Dr. Zomboss had to admit he was really getting into this whole pirate thing. Though he never thought he'd be on a boat on a boat.

Overview
The Zombot Plank Walker has an estimated absorption of 1,000 normal damage shots, and its appearance changes at 334 and 667 normal damage shots, before surrendering at 1,000 normal damage shots.

Attacks
The Zombot Plank Walker summons zombies any time it is neither jumping nor attacking. Besides that, it has two attacks.


 * The "eye" will open and reveal a cannon. It will then fire seven Imp Pirate Zombies into random rows.
 * It will step back, charge, and destroy any plants and zombies in two rows; stopping near the Lawn Mowers and jumping back. As with the Zombot Sphinx-inator's similar attack, using Plant Food can prevent it. It will also stop and be stunned if it collides with a Cherry Bomb.
 * Although any Plant Food power-up will work, Spikeweed's is the least adviced to be used against this attack. Spikeweed's will pull the Zombot Plank Walker and stop it for a short while, although this is shorter than the period it would be stunned with other Plant Food power-ups. Also, that can be a bad idea since the Zombot will destroy your plants but not the zombies.
 * While using a Kernel-pult's Plant Food effect works most of the time to stop his charge attack, sometimes, especially in stage 3 of the health bar of the Zombot, it is unfazed by the catapult plant's Plant Food upgrade at all when he is doing his charge and will proceed to destroy plants from both lanes anyway. You have no idea when this will happen so be prepared.

Strategies

 * As the battle starts, pick the first plant immediately especially if it's a Coconut Cannon because sometimes, the Zombot Plank Walker will fire down its cannon, raining five Imp Pirates in the process. When this happens, blast them with the Cannon. This can help you lessen down the burden.
 * There are times that after firing the cannon, the Zombot will summon the Pirate Captain Zombie alone immediately. Keep on placing plants so that the when the Parrot steals one, you have more to repel the zombie along with the Imps.
 * The Zombot Plank Walker has three zombie summoning stages, similar to the Egyptian counterpart. Pirate Captain Zombies, and Zombie Parrots are always summoned regardless of tier.
 * Phase 1 - Only Conehead Pirates are summoned. Two to five of these can be summoned. It is advised that you plant Spikeweeds while the Zombot is summoning them so that after they appeared, they'll be damaged already. These are the only zombies along with the Pirate Captain Zombie that will be summoned until one-third of the health is gone.
 * Phase 2 - Buckethead Pirates and Gargantuar Pirates are finally summoned along with the Conehead Pirates. Try blasting these guys with Coconut Cannons or Snapdragons when fed by Plant Food to prevent further collateral damage. The Plank Walker will only summon these zombies along with the previous tier until two-thirds of its health is gone.
 * Phase 3 - Barrel Roller Zombies are already summoned. When two-thirds of the health is gone already, three to six of Bucketheads, two to three of Barrel Rollers, and five to seven of Coneheads are now summoned at this phase, making it much difficult to compensate. Apply the Cocount Cannon Plant Food strategy or Snapdragon strategy. Kernel-Pults are not that advised. Sometimes during this phase, the Plank Walker will clear almost all plants with two charge attack, leaving only one lane of plants. Use Snapdragon Plant Food to prevent this.
 * ALWAYS stall the zombie with the highest level of threat such as Barrel Rollers, Gargantuars, and Imps because these are the only zombies that will wreck the entire row of your plants with Snapdragon, Spikeweed, and Cocount Cannon. As much as possible, keep two Plant Foods at disposal.
 * When you know it is about to charge towards your lawn, simply stun it with plants that are fed with Plant Food even though this is also a good way to eliminate zombie horde.
 * Keep the Spikeweeds in the Plank Walker's legs to damage it while summoning zombies and in the lanes where Barrel Roller Zombies will be summoned that way, you can prevent your plants from being crushed.
 * Keep Snapdragons in the front 4 rows since their range is short.
 * Planting Spikeweeds directly under the Plank Walker (i.e. two right-most columns) will help continuously damage it, especially when loads of zombies are being summoned. They will be destroyed when the Plank Walker changes lawn position, however, so be sure to save several for when it does.
 * ALWAYS SAVE PLANT FOOD!

Trivia

 * Dr. Zomboss has an eyepatch on his left eye just like a pirate.
 * The Zombot Plank Walker actually looks like a ship with cannons attached to it and anchors as its legs.
 * Before the battle starts, Dr. Zomboss suspected that Penny is also another possible creations of his Zombots.
 * This machine has a single eye just like the Egyptian Variation and the Western Varation, which resembles a cyclops.
 * It is currently the only Zomboss mech that does not not fire missiles, as it instead launches a barrage of Imps much like the Imp Cannon.
 * The battle with the Zombot Plank Walker is the only Pirate Seas level with planks on every lane.
 * If you will observe closely, the Imp that is actually tied up at the upper part of the eye of the Plank Walker is a dead one.
 * In the battle, some plants are only recieved numerically. You will only receive five Coconut Cannons and Threepeaters (because of the former's instant kill properties and the latter's three way projectiles) at a time. However if one dies, a new Threepeater/Coconut Cannon will appear.
 * Likewise, due to it's destructive Plant Food ability, 3 Snapdragons will only be brought at a time while Cherry Bombs are rare (instant kill).
 * However, Spikeweeds and Kernel-pults are extremely common and unnumerically unlimited, with the former being more common to appear.
 * Once you defeat the Zombot Plank Walker, a rainbow is seen above the level.
 * If you use Plant Food on a Spikeweed before it jumps it will teleport to where is it was jumping to.
 * The Zombot Plank Walker is currently the only boss to have Dr. Zomboss to look different (an eyepatch).