Mermonkey (BTD6)

For the Mermonkey in general, see Mermonkey.

Mermonkey
A magical trident throwing Monkey of the sea that calls upon the power of the depths for damage, support, or Bloon clean up. Amphibious, but thrives in water.
Category Magic Cost $405 — Easy $475 — Medium $515 — Hard $570 — Impoppable Introduced Version 44.0

The Mermonkey is a Magic tower in Bloons TD 6, introduced in version 44.0. It is unlocked by popping 3 million Bloon layers or by purchasing the Mermonkey Unlock Pack from the Shop.

The Mermonkey attacks by throwing tridents that create damaging splashes around each Bloon they hit, similar to Hydra Rocket Pods and Captain Churchill's explosives. Each trident can create two splashes by default. The Mermonkey can be placed on both land and water, but has 25% more range if placed in water. Its first upgrade path is deep sea-themed and focuses on improving its attack speed, buffing nearby towers' pierce, and empowering an Abyssal Creature that attacks Bloons with its tentacles. Its second path is Greek mythology-themed and focuses on improving its trident attack, as well as granting it the ability to freeze Bloons with its trident and its Activated Ability. Its third path is Siren-themed and focuses on Camo detection and seeking projectiles, improving its range, applying effects to Bloons, and buffing Heroes.

Upgrades

Path 1

Trident Efficiency XP cost: 160
	Acclimation to local water density allows Mermonkey to attack faster with all attacks. Easy Medium Hard Impoppable $125 $150 $160 $180

Trident Swiftness XP cost: 580
	Tridents are thrown faster and travel further. Easy Medium Hard Impoppable $210 $250 $270 $300

Abyss Dweller XP cost: 2,800
	The Abyssal Creature awakens, angrily lashing out at Bloons with powerful tentacles and granting nearby Monkeys a small pierce increase. Easy Medium Hard Impoppable $1,530 $1,800 $1,945 $2,160

Abyssal Warrior XP cost: 11,000
	Coats tridents in a thick ink that slows bloons. Abyssal creature grows in power, destroying most Bloons with ease and enhancing nearby Monkeys with more pierce. Easy Medium Hard Impoppable $3,570 $4,200 $4,535 $5,040

Lord of the Abyss XP cost: 68,000
	The fully unleashed wrath of the Abyssal Creature brings the power of the depths to the surface, annihilating most Bloons, and greatly enhancing the pierce of nearby Monkeys. Easy Medium Hard Impoppable $19,550 $23,000 $24,840 $27,600

Path 2

Sharper Prongs XP cost: 150
	Can pop more Bloons with each attack. Easy Medium Hard Impoppable $170 $200 $215 $240

Tidal Chill XP cost: 700
	Icy tridents are larger and can freeze Bloons. Easy Medium Hard Impoppable $190 $225 $245 $270

Riptide Champion XP cost: 2,500
	Mermonkey draws energy from the sea. Tridents can pop Lead Bloons, grow in power as they travel, and crash with devastating force. Easy Medium Hard Impoppable $1,700 $2,000 $2,160 $2,400

Arctic Knight XP cost: 16,000
	Tridents grow in power faster. Ice Jet ability: Launches a barrage of bouncing ice balls following target priority, or targeted point. Easy Medium Hard Impoppable $6,800 $8,000 $8,640 $9,600

Popseidon XP cost: 70,000
	Popseidon's Ice Jet ability draws such power that a rogue wave floods the map with supercooled water, freezing all Bloons and reclaiming the weak for the sea. Easy Medium Hard Impoppable $44,200 $52,000 $56,160 $62,400

Path 3

Echosense Precision XP cost: 150
	Tridents can detect Camo bloons and tridents seek their target. Easy Medium Hard Impoppable $170 $200 $215 $240

Echosense Network XP cost: 670
	Increases range for all Echosense Mermonkeys. Stacks up to 10 times. Easy Medium Hard Impoppable $240 $280 $300 $335

Alluring Melody XP cost: 3,000
	Entrances non MOAB-Class Bloons with a hypnotic tune, magically detonating all damage over time effects, disrupting Bloon movement, and strips Camo. Easy Medium Hard Impoppable $1,700 $2,000 $2,160 $2,400

Symphonic Resonance XP cost: 14,500
	Hypnotic tune can affect low tier MOAB-Class Bloons. Can be set to echo from a nearby point. Easy Medium Hard Impoppable $6,460 $7,600 $8,210 $9,120

The Final Harmonic XP cost: 52,000
	This elder can echo its irresistible tune anywhere. While devastating to Bloons, the call inspires nearby Heroes with improved range and cooldowns, and Magic Monkeys extra pierce. Easy Medium Hard Impoppable $21,250 $25,000 $27,000 $30,000

Stats

For a complete list of Mermonkey stats, see Stats:Mermonkey (BTD6).

This data was last updated for: version 55.1

Tower
Display range 28 units Footprint radius 8 units Targeting options First Last Close Strong

Attack
Cooldown 1.2s Offset (X, Y, Z) -0.5, 3.4, 7 Targeting Depends on targeting option Targeting range 28 units Filters Cannot target Camo
Projectile Pierce 2 Speed 200 units/s Lifespan 1s Radius 2 units Filters Cannot hit Camo Splash Pierce 3 Max pierce 3 Damage 2 Damage type Shatter Lifespan 0.05s Radius 3 units Filters Cannot hit Camo Ignores blockers

Buff when in water
Range modifier ×1.35

Costs and sell values

Note: this list does not factor in Monkey Knowledge or other discounts.

Tiers	Total cost				Sell value
	Easy	Medium	Hard	Impoppable	Easy	Medium	Hard	Impoppable
0-0-0	$255	$300	$325	$360	$179	$210	$228	$252
1-0-0	$380	$450	$485	$540	$266	$315	$340	$378
1-1-0	$550	$650	$700	$780	$385	$455	$490	$546
1-0-1	$550	$650	$700	$780	$385	$455	$490	$546
0-1-0	$425	$500	$540	$600	$298	$350	$378	$420
0-1-1	$595	$700	$755	$840	$417	$490	$529	$588
0-0-1	$425	$500	$540	$600	$298	$350	$378	$420
2-0-0	$590	$700	$755	$840	$413	$490	$529	$588
2-1-0	$760	$900	$970	$1,080	$532	$630	$679	$756
2-2-0	$950	$1,125	$1,215	$1,350	$665	$788	$851	$945
2-0-1	$760	$900	$970	$1,080	$532	$630	$679	$756
2-0-2	$1,000	$1,180	$1,270	$1,415	$700	$826	$889	$991
0-2-0	$615	$725	$785	$870	$431	$508	$550	$609
1-2-0	$740	$875	$945	$1,050	$518	$613	$662	$735
0-2-1	$785	$925	$1,000	$1,110	$550	$648	$700	$777
0-2-2	$1,025	$1,205	$1,300	$1,445	$718	$844	$910	$1,012
0-0-2	$665	$780	$840	$935	$466	$546	$588	$655
1-0-2	$790	$930	$1,000	$1,115	$553	$651	$700	$781
0-1-2	$835	$980	$1,055	$1,175	$585	$686	$739	$823
3-0-0	$2,120	$2,500	$2,700	$3,000	$1,484	$1,750	$1,890	$2,100
3-1-0	$2,290	$2,700	$2,915	$3,240	$1,603	$1,890	$2,041	$2,268
3-2-0	$2,480	$2,925	$3,160	$3,510	$1,736	$2,048	$2,212	$2,457
3-0-1	$2,290	$2,700	$2,915	$3,240	$1,603	$1,890	$2,041	$2,268
3-0-2	$2,530	$2,980	$3,215	$3,575	$1,771	$2,086	$2,251	$2,503
0-3-0	$2,315	$2,725	$2,945	$3,270	$1,621	$1,908	$2,062	$2,289
1-3-0	$2,440	$2,875	$3,105	$3,450	$1,708	$2,013	$2,174	$2,415
2-3-0	$2,650	$3,125	$3,375	$3,750	$1,855	$2,188	$2,363	$2,625
0-3-1	$2,485	$2,925	$3,160	$3,510	$1,740	$2,048	$2,212	$2,457
0-3-2	$2,725	$3,205	$3,460	$3,845	$1,908	$2,244	$2,422	$2,692
0-0-3	$2,365	$2,780	$3,000	$3,335	$1,656	$1,946	$2,100	$2,335
1-0-3	$2,490	$2,930	$3,160	$3,515	$1,743	$2,051	$2,212	$2,461
2-0-3	$2,700	$3,180	$3,430	$3,815	$1,890	$2,226	$2,401	$2,671
0-1-3	$2,535	$2,980	$3,215	$3,575	$1,775	$2,086	$2,251	$2,503
0-2-3	$2,725	$3,205	$3,460	$3,845	$1,908	$2,244	$2,422	$2,692
4-0-0	$5,690	$6,700	$7,235	$8,040	$3,983	$4,690	$5,065	$5,628
4-1-0	$5,860	$6,900	$7,450	$8,280	$4,102	$4,830	$5,215	$5,796
4-2-0	$6,050	$7,125	$7,695	$8,550	$4,235	$4,988	$5,387	$5,985
4-0-1	$5,860	$6,900	$7,450	$8,280	$4,102	$4,830	$5,215	$5,796
4-0-2	$6,100	$7,180	$7,750	$8,615	$4,270	$5,026	$5,425	$6,031
0-4-0	$9,115	$10,725	$11,585	$12,870	$6,381	$7,508	$8,110	$9,009
1-4-0	$9,240	$10,875	$11,745	$13,050	$6,468	$7,613	$8,222	$9,135
2-4-0	$9,450	$11,125	$12,015	$13,350	$6,615	$7,788	$8,411	$9,345
0-4-1	$9,285	$10,925	$11,800	$13,110	$6,500	$7,648	$8,260	$9,177
0-4-2	$9,525	$11,205	$12,100	$13,445	$6,668	$7,844	$8,470	$9,412
0-0-4	$8,825	$10,380	$11,210	$12,455	$6,178	$7,266	$7,847	$8,719
1-0-4	$8,950	$10,530	$11,370	$12,635	$6,265	$7,371	$7,959	$8,845
2-0-4	$9,160	$10,780	$11,640	$12,935	$6,412	$7,546	$8,148	$9,055
0-1-4	$8,995	$10,580	$11,425	$12,695	$6,297	$7,406	$7,998	$8,887
0-2-4	$9,185	$10,805	$11,670	$12,965	$6,430	$7,564	$8,169	$9,076
5-0-0	$25,240	$29,700	$32,075	$35,640	$17,668	$20,790	$22,453	$24,948
5-1-0	$25,410	$29,900	$32,290	$35,880	$17,787	$20,930	$22,603	$25,116
5-2-0	$25,600	$30,125	$32,535	$36,150	$17,920	$21,088	$22,775	$25,305
5-0-1	$25,410	$29,900	$32,290	$35,880	$17,787	$20,930	$22,603	$25,116
5-0-2	$25,650	$30,180	$32,590	$36,215	$17,955	$21,126	$22,813	$25,351
0-5-0	$53,315	$62,725	$67,745	$75,270	$37,321	$43,908	$47,422	$52,689
1-5-0	$53,440	$62,875	$67,905	$75,450	$37,408	$44,013	$47,534	$52,815
2-5-0	$53,650	$63,125	$68,175	$75,750	$37,555	$44,188	$47,723	$53,025
0-5-1	$53,485	$62,925	$67,960	$75,510	$37,440	$44,048	$47,572	$52,857
0-5-2	$53,725	$63,205	$68,260	$75,845	$37,608	$44,244	$47,782	$53,092
0-0-5	$30,075	$35,380	$38,210	$42,455	$21,053	$24,766	$26,747	$29,719
1-0-5	$30,200	$35,530	$38,370	$42,635	$21,140	$24,871	$26,859	$29,845
2-0-5	$30,410	$35,780	$38,640	$42,935	$21,287	$25,046	$27,048	$30,055
0-1-5	$30,245	$35,580	$38,425	$42,695	$21,172	$24,906	$26,898	$29,887
0-2-5	$30,435	$35,805	$38,670	$42,965	$21,305	$25,064	$27,069	$30,076

Strategy

For more in-depth strategies, see Strategy:Mermonkey (BTD6).

This strategy section is empty or incomplete. See the strategy guidelines for more information on how to write strategy sections. The editor who added this notice elaborates: this should contain a few basic tips, details should be saved for the strategy article

Pre-release

The Mermonkey was first confirmed in the update notes for version 42.0. It was later given an extensive preview in the update notes and accompanying video for version 44.0.

Update history

For a complete list of Mermonkey changes, see Update history:Mermonkey (BTD6).

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Version 45.0

“

We were cautious with initial low tier Mermonkey upgrades, but as nothing seriously unexpected came up we’ve reduced the base cost and improved the projectile lifespan which should help with issues on some higher tier upgrades. — Update notes

”

•  Cost reduced ― $600 → $475
•  Trident: projectile lifespan increased ― 0.5s → 1s

Version 49.0

•  Cost reduced ― $475 → $375

Version 51.0

•  Range bonus when placed in water increased ― +25% → +35%

Version 52.0

“

Last update many players felt blindsided when Brickell stopped applying her buff to Mermonkeys since there was no mention in the balance changes section. We would like to apologize for that - it was tasked internally as a bug as it was indeed unintended to work that way. We then left the issue alone for a long time, mostly due to other more pressing matters, and this issue fell through the cracks. In retrospect, it would have been better to treat this as balance rather than a simple bug fix due to how much time had passed. Reading through your feedback, we did consider just reverting the change, however the bigger issue that the feedback reinforced to us was that players considered Mermonkey to be so bad that it was only a "good" tower when used in combination with a single, water-only hero. This sort of forced synergy goes against our design intentions - namely that Mermonkey being our signature amphibious tower should be able to stand on its own without being balance-locked to an interaction with a single hero. With all that in mind, we feel Mermonkey's highest priority right now is large sweeping buffs to each of the paths, so most of the following changes are our first step towards this starting from the low tier crosspaths. — Update notes

”

•  Cost reduced ― $375 → $275

Version 54.0

“

Mermonkey ended up somewhat underrated and overbuffed, mid tiers for top and middle paths have really stood out here lately and need to be reigned back in line. — Update notes

”

•  Cost increased ― $275 → $300
•  Splash: Radius reduced ― 6 units → 3 units
  • Note: Stacks with X-2-X Tidal Chill ― 9 units → 4.5 units
  • Also affects all crosspaths up to 2-2-2.

Gallery

For more Mermonkey images, see Gallery:Mermonkey.

Screenshots

This article or section needs more screenshots. See the screenshot guidelines for more information on what screenshots are needed and how to add them.

Assets

• 
  Portrait
• 
  Insta Monkey icon
• 
  Unused buff icon

Promotional images

• 
  44.0 pre-release image
• 
  44.0 Release image