The Knight Zombie wears a metal knight helm with a small red feather on its head. He also wears metal shoulder pads, unlike a standard Peasant Zombie. Rather than wearing a full knight gear, it wears instead a standard peasant outfit, giving it an odd, half-knight, half-peasant appearance.
Almanac entry
Knight Zombie
TOUGHNESS
Machined
SPEED
Basic
His king appointed helm provides amazing protection from damage.
Knight Zombie was just as surprised as anyone when Zombie King promoted him. He'd never say this out loud, but he's not sure he deserves the position. He's not sure he has what it takes to wear the armor. But like they say, "Fake it 'til you make it."
Knight Zombie
TOUGHNESS
Machined
SPEED
Basic
His king appointed helm provides amazing protection from damage.
Knight Zombie was just as surprised as anyone when Zombie King promoted him. He'd never say this out loud, but he's not sure he deserves the position. He's not sure he has what it takes to wear the armor. But like they say, "Fake it 'til you make it."
Overview
The Knight Zombie absorbs 89.25 normal damage shots and its appearance changes upon absorbing 27, 54, 80 (when the helmet is destroyed) and 84.75 normal damage shots, before it dies at 89.25 normal damage shots.
This zombie can be a big problem if you are not prepared. If you see Knight Zombie on the seed selection screen, choose an instant-kill plant as a way to quickly get rid of this zombie. Try to break all the graves near the plants, as these zombies can be summoned during Necromancy. Fume-shroom's Plant Food ability will also help, as it greatly reduces Knight Zombie's health and will push it back. Using Fume-shroom's Plant Food ability in conjunction with Sun Bean is quite effective for sun farming. If there are other zombies behind it with high health, such as Buckethead Peasant, it may be useful to use a Hypno-shroom on it. Use Sun Bean's Plant Food on it if you are low on sun. Any strong offensive plant, such as Coconut Cannon or Citron will take it down quite easily. Using Magnet-shrooms can help a lot as they remove their helm, which will reduce his toughness drastically. When there are a lot of Knight Zombies, use Plant Food on a Magnet-shroom for removing each helm or a Shadow-shroom for dealing direct damage to all Knights on-screen, while ignoring their helms completely. Do not use it if you see Zombie Kings, as they will grant the helms back. Chili Beans can defeat it instantly when eaten.
Hurrikales are extremely helpful in dealing with Knight Zombies, as it can push Knights and other threats away from your plants and back at the end of the lawn. Beware though, as Wizard Zombies can stay protected by stronger zombies. Using it with high-power plants is recommended.
Magnifying Grass, while useful as an armor-breaker, should be used sparingly due to the reduced sun income in Dark Ages. It takes four shots from it to kill a Knight Zombie, costing 200 sun. The Magnifying Grass has the advantage of having non-reflectable projectiles, meaning it can serve as a multi-purpose plant against both Knight Zombies and Jester Zombies.
Arthur's Challenge
In Arthur's Challenge, Knight Zombies, along with Zombie Kings, Jester Zombies, Dark Ages Gargantuars, and Wizard Zombies, are very dangerous in large numbers. These zombies are very troublesome due to their durability and can cause a massive havoc on your lawn, making you lose the game. You should have Cherry Bombs, Fume-shrooms, Iceberg Lettuces, and their Imitater versions for your disposal.
Gallery
Plants vs. Zombies Wiki has a gallery for Knight Zombie.
Its Almanac entry makes a reference to Zombie King, despite Zombie King being released after Knight Zombie. This could of been a sort of teaser or hint that the Zombie King was going to appear in Dark Ages Part 2.
After its helmet gets knocked off, its shoulder armor inexplicably disappears.
The shoulder armor is counted as part of the helmet, so it disappears with the helmet when he becomes a Peasant Zombie.
Although it cannot survive an instant kill, it takes two hits for a hypnotized Gargantuar to kill a full health Knight Zombie.
When a full health Knight Zombie eats a Chili Bean, its helmet will change appearance, as it is broken to the third degrade.
It is the only normal headwear zombie that can appear in a level even though the lack of the seed selection screen appearance suggests it will not.
Although, since Bug Zombie can carry Conehead Adventurer and Buckethead Adventurer, and since they aren't considered separate from the Bug until it dies, these headwear zombies can appear in a level without their separate zombie being on the seed selection screen.
When a Zombie King promotes a Peasant Zombie without an arm, it becomes a Knight Zombie without an arm. This is the only time without hacking textures, a level 2 Endurian in the Chinese version, or Shadow-shroom's poisoning effect, that a headwear zombie can have undamaged armor but lack an arm at the same time.
Since the 5.9.1 update, for some reason, the knight helmets no longer glow white when the Zombie King grants a helm to any Peasant Zombie.
In the Chinese version, the Cavalry Zombie is a Knight Zombie sitting on a horse, similar to a Zombie Bull.
