Zombot Sphinx-inator

The Zombot Sphinx-inator is the boss of Ancient Egypt in Plants vs. Zombies 2: It's About Time. It is controlled by Dr. Zomboss, and is battled in Ancient Egypt Day 25. It is similar to Zombot of Ancient Egypt.

The boss battle is a conveyor-belt level, which gives the player Bloomerangs, Cabbage-pults, Repeaters, Wall-nuts, Bonk Choys, Iceberg Lettuces, and Grave Busters. The Sphinx-inator can send out all zombies from Ancient Egypt, except the Flag Mummy Zombie, Ra Zombie and Camel Zombies. It takes up a 2 by 2 area at the right side of the lawn, and jumps into different rows occasionally. It can only send out zombies in two rows at a time, but it can only be attacked in the two rows it occupies at any one time. Unlike the original Zombot, the Sphinx-inator can be attacked at all times.

Almanac Entry
TOUGHNESS:  Undying

SPEED: Hungry

The destroyer of plants from the ancient sands.

SPECIAL:  missile attack can create tombstones

To add that extra bit of wickedness to the Sphinx-inator Dr. Zomboss chiseled his creation from the stonework of cursed tombs. You should not take this instance of reuse and recycle to mean he's going green. The only thing green about him is his tongue.

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

Attacks
The Zombot Sphinx-inator has two attacks. When not attacking, he sends zombies at you, spawning them in the third column from the right.
 * A target will appear on a random space, and the Sphinx-inator will shoot a missile at that space, destroying any plant on it, creating two Tombstones nearby.
 * The Sphinx-inator will step back, and then charge forwards, destroying all plants and zombies in two rows. It will then stop short of the Lawn Mowers, and jump back to the rightmost column.
 * It is possible to stun it with the Plant Food effects of Repeaters, Bloomerangs, Bonk Choys or Cabbage-pults when it uses this attack, preventing the attack from destroying two whole rows.
 * It is also possible to do this by making it hit an armoured Wall-nut, but this is not recommended, as the Zombot Sphinx-inator will not be damaged if it hits an armoured Wall-nut.

Strategies

 * It is recommended to keep one Iceberg Lettuce, one Grave Buster, and one Plant Food at all times. This way, you can quickly remove tombstones that show up in bad places, and you can use Plant Food to counteract the Sphinx-inator's charge attack.
 * Use Plant Food on Bloomerangs to clear out rows of Zombies, or use it on Bonk Choys for dense groups.
 * The Zombot Sphinx-inator wil almost always send his zombies in tight clusters. Imp Mummies and Mummified Gargantuars are not sent until phase two (when one-third of its health is gone), and Explorer Zombies and Pharaoh Zombies are not sent until phase three (when two-thirds of its health is gone). Try to take care all of them with a Bonk Choy fed with Plant Food in between the zombies. DO NOT plant the Bonk Choy in the middle of a Zombie stack or it will be eaten.
 * Never waste Plant Food, if one appears, and you've still got Plant Food, use one where it's needed, and then pick up the additional Plant Food.
 * In areas where you are about to die, place several plants there, so the Zombot Sphinx-inator will kill the zombies.
 * Always try to stall dangerous zombies such as Explorer Zombies, Pharaoh Zombies, and Mummified Gargantuars. Use Iceberg Lettuces and/or Wall-nuts to your advantage to stop them.
 * Don't be afraid to use Power Ups if you're about to lose.
 * Try to use Iceberg Lettuce when the Zombot Sphinx-inator is at a lane with many strong plants. But the Iceberg Lettuce won't freeze the Zombot Sphinx-inator, it will just slow it down.
 * The Zombot Sphinx-inator takes up 2 colums on the right of the screen. Watch out! If you plant a Bonk Choy in the 3rd colum, the Zombot Sphinx-inator will sometimes move into the 3rd colum and trample any plant within its range. ALWAYS keep at least 1 Plant Food and be prepared to stop Zomboss from trampling your Bonk Choy(s). Learn to anticipate when it will make that move.
 * When its target locks onto a plant, use Plant Food on that plant to keep the missile from destroying that plant.
 * For Bloomerangs and Cabbage-pults, only use Plant Foods when the missle almost lands on it because they have a short Plant Food duration.

Trivia

 * Its almanac entry says the only thing green about Dr. Zomboss is his tongue, which is incorrect because his body is green, and if one looks closely, his tongue is in a normal pinkish hue.
 * This fight was added in the Version 1.9 update for Plants vs. Zombies 2: It's About Time.
 * This fight is very similar to the Dr. Zomboss fight in Plants vs. Zombies.
 * Before the fight, Dr. Zomboss suspected our Crazy Dave is a brain-eater like them because he thinks the meat inside Dave's taco was BRAIN meat.
 * Dr. Zomboss calls Crazy Dave "David".
 * This name is only used in Plants vs. Zombies Adventures, so it is unknown why he uses it.
 * If the player waits long enough in the level selection screen, Dr. Zomboss is seen brushing his teeth.
 * The robot has one eye, like a cyclops.
 * When Dr. Zomboss is defeated, the players are awarded with the Ancient Egypt Trophy.
 * Also, after you received the trophy, Crazy Dave pops out and confirmed there was no meat inside the taco. Dr. Zomboss says " Well, that just leaves more brain for us later" and claimed he will return for a real pay-back. He then teleports away with what's left of Zombot Sphinx-inator.
 * Although it says in its almanac that the Zombot Sphinx-inator's toughness is "undying," it is possible to defeat it legitimately.
 * This is probably to emphasize its power and extremely high toughness.
 * When the Zombot Sphinx-inator is frozen and about to shoot a missile it will be blue but when it comes back from the top it is no longer frozen