Zombot Dark Dragon

Zombot Dark Dragon is the boss of Dark Ages in Plants vs. Zombies 2. Unlike its previous predecessors, it is a different form of Zombot which is a machine that is designed to be similar to a dragon. It is the eleventh zombie to be encountered in Dark Ages - Night 20. It summons all Dark Ages zombies except for Peasant Flag Zombie and Zombie King. It can be stopped by the Magnet-shroom's Plant Food upgrade.

Almanac entry
TOUGHNESS: Undying

SPEED: Hungry

The desolator of all, from dark times.

Damage: fire breathing attacks destroy plants

Special: lobbed fireballs can hatch Imp Dragon Zombies

With a rumble of destruction, Dr. Zomboss forged his Dark Dragon in the heart of a volcano. Then he tempered the beast in the chilled waters of Doom Lake. Finally he fed its furnace with coal from the Mines of Morbidity. And the paint job - that was done by Carl.

Overview
The Zombot Dark Dragon approximately absorbs 1,050 normal damage shots and its appearance changes upon absorbing 350, 700, and finally at 1,050 normal damage shots when it is defeated.

Attacks
The Zombot Dark Dragon randomly performs one of the following actions:
 * It will summon zombies, depending on the phase.
 * First phase:
 * Peasant Zombie
 * Conehead Peasant
 * Buckethead Peasant
 * Jester Zombie
 * Wizard Zombie
 * Imp Dragon Zombie
 * Second phase:
 * Conehead Peasant
 * Buckethead Peasant
 * Dark Ages Gargantuar
 * Imp Monk Zombie
 * Imp Dragon Zombie
 * Jester Zombie (Chinese version only)
 * Third phase:
 * Conehead Peasant
 * Knight Zombie
 * Wizard Zombie
 * Imp Dragon Zombie
 * Archmage Zombie (Chinese version only)
 * Dark Ages Gargantuar (Chinese version only)
 * Cavalry Zombie (Chinese version only)
 * It will spit fireballs that can summon Imp Dragon Zombies as well as scorch the tile it was lobbed on, briefly rendering it unplantable.
 * It will breathe fire, destroying plants and zombies in two rows.
 * Fume-shroom, Pea-nut, and Puff-shroom's Plant Food ablilty can stop this and its spitting fireball attack. The Kernel-pult is not recommended. The boosted Magnet-shroom can stop this, too.

Strategies

 * See Dark Ages - Night 20.

Trivia

 * Unlike the first four Zombots, this one is not a one-eyed, four-legged robot, although its eyes look similar to the other Zombots' (which are yellow with a black pupil). After it is defeated, one of the Zombot's eyes fall off as metal parts can be seen. This shows that it is a robot, not biological lifeform. However, it is unknown if this one is four-legged or not. It shares this trait with the Zombot Sharktronic Sub.
 * It is the first Zombot to be based on an animal. The second is Zombot Sharktronic Sub and the third is Zombot Tuskmaster 10,000 BC.
 * It is the first zombie and Zombot to lose an eye when defeated.
 * It is the second Zombot having Dr. Zomboss dressing up, the first being Zombot Plank Walker. In the Zombot Plank Walker, he wears the same only to include the eyepatch. Here, he dons a full Gladiator armor.
 * Dr. Zomboss' veins are shown through his helmet.
 * There is a cross tattoo or scar on the Zombot's face.
 * Dr. Zomboss is dressed up like a Roman gladiator since Rome fell just before the Dark Ages but the East Roman Empire (Byzantine Empire), survived until 1453, which was time when the Dark Ages started fading away into the Renaissance.
 * Its full body is only shown when it flies in. However, it is only a shadow of it.
 * It is the first Zomboss battle that has a premium plant on the conveyor and the second zomboss battle to give you a plant that's not from the same world it is in (the Pea-nut and Kernel-pult respectively).
 * It summons zombies in a different manner than the first four Zombots. In the first four battles, zombies are summoned out of a portal inside the Zombot's mouth, by slowly transforming first from a white silhouette. The Zombot Dark Dragon summons zombies similar to how Gunpowder Devil and Blade-Wielding Hero summons zombies; the zombies simply rise out of the ground whenever it roars.
 * Zombot Dark Dragon and Zombot Sharktronic Sub are the only Zombots with a weakness. The boosted Magnet-shroom tugs on the Zombot's nose ring, stunning it briefly while Tangle Kelp entangles the turbine of Zombot Sharktronic Sub.
 * However, the Zombot Tomorrow-tron can be stunned by the Blover as it charges.
 * Its lobbed fireballs can kill zombies.
 * Strangely enough, it can even kill Imp Dragon Zombies, even though they are immune to fire damage.
 * It is the second Zombot that is not fully visible. The first one was the original Zombot from Plants vs. Zombies, third one is the Zombot Sharktronic Sub, and the fourth one is Zombot Tuskmaster 10,000 BC.
 * In the Chinese Dark Ages map, it appears to have legs.
 * Also, Dr. Zomboss does not wear his gladiator armor. Instead, he is wearing his usual lab gown.
 * The boss battle is also in Last Stand format.
 * Dr. Zomboss does not summon any stationary zombies in his fights, namely the Zombie King.
 * The fireball attack seems to aim at Magnet-shrooms.
 * Plants on a scorched tile when fed with Plant Food will be destroyed once they are finished with their Plant Food ability.
 * It is the second Zombot in Plants vs Zombies 2 to be able to fly, with the first being Zombot Tomorrow-tron (without legs).