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Bloons Wiki

Reanimate recently popped enemies as servants to destroy the Bloons.
~ BTD6 description

Necromancer: Unpopped Army (shortened to Necromancer) is the fourth upgrade of Path 3 for the Wizard Monkey in BTD6. It causes all bloons popped near the Wizard to become undead bloons that travel towards the entrance and deal damage to bloons they touch (including Purple and Lead Bloons). Each undead bloon deals 2 damage per hit and has a random amount of pierce between 2 and 11, lasting for up to 10 seconds. Level 11+ Ezili increases the pierce of undead bloons by 50%, which is applied before other buffs to pierce.

The undead bloons are stored in a personal graveyard, local to each Necromancer, and a given Necromancer can store up to 500 accumulated bloons popped for up to 2 rounds. Undead bloons spawn +10% faster for every 100 graveyard units, up to +50% faster with a graveyard of 500. Additionally, all the Wizard's attacks deal +1 damage per 200 graveyard units in the personal graveyard.

It costs $2380 on Easy, $2800 on Medium, $3025 on Hard and $3360 on Impoppable.



Unlike the appearance of the Shimmer predecessor, the Necromancer's cloak is almost entirely black, with purple trims on the sleeves and the hood. The hood now is adorned with a skull that has glowing green eyes, and the Necromancer's skin has also become entirely green (although most of his face is hidden by mummy bandages). The Necromancer also wields a skull-topped staff, which seems to be telekinetically controlled.

Graveyard Units[]

See also: Undead Bloon


The Necromancer receives graveyard units when bloons are popped within 70 range of the Necromancer (these do not have to be popped by the Necromancer himself). Each layer popped gives 1 graveyard unit; for instance, popping a MOAB only gives +1 graveyard unit, but popping an entire Rainbow Bloon gives +46 graveyard units. However, from Rounds 81+ when Super Ceramics arrive, popping a Super Ceramic layer gives between 7-13 graveyard units, inclusive, to compensate for the fewer child bloons per Super Ceramic. Each Necromancer's graveyard can only hold up to 500 units.


Every time a Necromancer summons undead bloons, it will randomly consume 1-10 graveyard units. 1 to 4 undead bloons are summoned at a time, each consuming the previously mentioned quantities of graveyard space. Each undead bloon has 1 base pierce and gets bonus pierce equivalent to how many graveyard units were consumed.

For every 100 units in a Necromancer's graveyard, he summons undead bloons +10% faster, up to 50% faster at the max 500 graveyard units. Each undead bloon also gets 1 bonus damage for every 200 graveyard units (up to +2 at 400-500 graveyard units) that the Necromancer had right before he summoned the bloon.

Graveyard units stored in a Necromancer last for up to 2 rounds before being automatically depleted.


Tower Prices[]

  • x-x-4 Price on Easy: $2,380 (Total: $4,800)
  • x-x-4 Price on Medium: $2,800 (Total: $5,675)
  • x-x-4 Price on Hard: $3,025 (Total: $6,105)
  • x-x-4 Price on Impoppable: $3,360 (Total: $6,780)


Necromancer: Unpopped Army is one of the strongest towers for its cost as of Version 21.0. It can deal serious damage if it is can amass undead bloons, but it is less effective against waves of MOAB-Class Bloons, since each one generates very few undead bloons when popped. It is one of the best towers in the earlier mid-game as a cleanup option. Pairing it with nearby towers for extra damage helps optimize the Necromancer's overall performance and keep its graveyard full more often. If placed in a good position with supporting damage, one Necromancer can easily reach well over 100,000 pops by round 100.


  • Always provide another offensive tower nearby, whether it is another Necromancer or any other suitable tower. This reduces leaks while the Necromancer is summoning undead bloons and contributes to the Necromancer's graveyard.
    • This is especially useful on rounds where there are not many low-tier bloons for the Necromancer to begin summoning and snowballing from.
  • Position the Necromancer on areas of the track where you want the bloons to spawn by placing only that track within its range.
  • When placed near the start of the track lane, Necromancers can be used as effective anti-stall on single-lane maps. For even better performance, add even more Necromancers, a Prince of Darkness, add Alchemist buffs, plus other towers that deal effective MOAB-class damage (e.g. MOAB Maulers).
  • Unlike ability-based towers, Necromancers benefit the most from anti-stalling. This is because anti-stalling a round will minimize the depletion of the graveyard and therefore store more undead bloons for later rounds.
  • Since all the Necromancer's attacks deal bonus damage with a fuller graveyard, it is usually better off going for 0-2-4 rather than 2-0-4 to boost Wall of Fire. Additionally, greater damage within the Necromancer's direct range means the graveyard can be filled faster.
  • Undead bloon spawning always ignores line of sight, even if the Necromancer itself can't see over the walls. Undead bloons only require an overlapping track space to spawn from.
  • Necromancers should be placed where the majority of your towers will attack, in order to gain as many undead bloons as possible from the nearby popped bloons.


FIRST RELEASED: Version 21.0
Description: Reanimate 250,000 bloons to fight on your side using the Necromancer Wizard

Version History[]

Necromancer has been buffed by a significant amount since it was first released. Additional undead bloon spawns, a slight overall cost reduction, extra damage, and reworked local graveyard mechanics are all important factors to shaping it into a very strong option for mid-game damage when paired alongside additional towers.

  • Buff Necromancer now summons 2-5 undead bloons instead of 1-3 undead bloons per summon.
  • Buff Necromancer costs less ($3500 → $2800).
  • Buff Necromancer undead bloons now deal +1 damage.
  • Buff xx4 Necromancer Wizards now each have their own personal 'graveyard' of 500 capacity rather than 1 shared pool of 2000.
  • Buff xx4 Necromancer Wizards will display their current graveyard size above their portrait next to their pop count. Any Bloons popped within the Shimmer radius of a Necromancer can be absorbed into that graveyard, but 1 pop will not fill more than 1 graveyard.
  • Buff xx4 Necromancer Wizards will now be able to retain any Bloons in their graveyard for 1 extra round before expiring.
  • Buff xx4 Necromancer Wizard's Zombie lifespan increased from 8s → 10s.
  • Buff xx4 Necromancer Wizard's Zombie spawn rate is increased by a flat 10% for every 100 Bloons in the grave reaching a maximum of double attack speed at 500 capacity.
Though it was never a goal for the base tower to be great, given the additional purple weakness since BTD5 and how poorly it currently performs we feel it deserves to take rank as the cheapest magic tower along with a small buff. [...] Finally, Unpopped Army changes are also here! We wanted to cover all of the usability issues with this upgrade while also powering it up and expanding more on the mechanic that makes it so unique. We hope this will be enough to make Wizard very useful in a number of ways, but will be keeping a watchful eye on how it plays out.
~ Ninja Kiwi, referring to base Wizard and Necromancers
  • Buff xx4 Unpopped Army now gains a bonus to graveyard after round 81 to make up for the total decrease in child Bloons that are created from Super Ceramics (about 10 per pop).
  • Buff xx4 Unpopped Army targeting has been reworked to function in a smarter way, summoning Zombie Bloons further back to avoid them spawning behind Bloons, and also on multi-lane tracks targeting the lanes that are likely to leak sooner.
  • Buff xx4 Unpopped Army now enhances the damage of all of its attacks by 1 for every 200 souls in its Graveyard.
  • Buff Main bolt has more pierce (7 → 8, inherited from the base Wizard pierce buff).
25.0 (Possibly? 27.3 discovered)
  • Buff [undocumented] 1-0-3 Shimmer now activates over walls
~ ...

Bug fixes[]

  • Buff Fixed obscure bug whereby undead bloon count slightly drops for undead bloons accumulated on the previous round. Also applies for Prince of Darkness.


Official artwork[]




  • This upgrade and the Prince of Darkness are the only upgrades that spawn undead bloons.
  • Undead bloons are slightly off-center on tracks, similar to Bloons in early games of the BTD franchise.
  • Undead bloons aren't affected by the Big Bloon Option. This also occurs with the undead MOABs and BFBs spawned by Prince of Darkness.
  • A single bloon popped will count towards the graveyards of all applicable Necromancers nearby, so multiple Necromancers can spawn additional undead bloons even if only a few Bloons are popped (ex. 3 Necromancers will summon 3 undead bloons for 1 Red Bloon).
  • In Version 23.0, although Prince of Darkness's damage stack requirements have been nerfed to per 300 graveyard space instead of 200, this had no effect on the normal Necromancer. This means that the normal Necromancer can still deal 4 damage at maximum capacity. When tested out, a Rainbow Bloon still turns into Yellow Bloons, implying 4 damage has been done by the undead bloons.
  • Necromancer: Unpopped Army is the second tower to create a Bloon type. The first one being the Ice Monkey creating Frozen Bloons.