Mermonkey (BTD6)

Mermonkey iterations: BTD6

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 $255 — Easy $300 — Medium $325 — Hard $360 — 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 for the Gift Box 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. Each trident has a very brief (0.05s) cooldown between activating a splash on a new target. The Mermonkey can be placed on both land and water, but has 35% more range if placed in water.

It can be upgraded to awaken an abyssal creature, fire freezing water attacks, or sing magical songs which heavily impede the bloons.

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

Related Monkey Knowledge

Mermonkey currently has no Monkey Knowledge specific to it. However, it is affected by Monkey Knowledge specific to Magic and all towers.

Rogue Legends

Starter parties with Mermonkeys

Item	Insta Monkey 1	Insta Monkey 2	Artifact
Ocean Guardian	2-0-0 Mermonkey	2-0-0 Beast Handler	Portability Common
Fusty the Snowman	2-0-0 Ice Monkey	0-2-0 Mermonkey	Frosted Tips Legendary
Dread Pirate Brickell	0-0-0 Beast Handler	3-0-0 Mermonkey	What In Tarnation Common
Psimbals	0-0-2 Mermonkey	0-3-0 Dart Monkey	Biggest Beacon Legendary
Lifeguard Brickell	0-1-1 Mermonkey	0-2-0 Heli Pilot	Summer Fun Rare

While not explicitly part of their starter parties, Tinkerfairy also starts with a Mermonkey because she starts with the Fata Morgana Common.

Artifacts that add Mermonkeys

Artifact	Common	Rare	Legendary
Fata Morgana	0-1-1 Mermonkey	0-2-1 Mermonkey	0-2-0 Mermonkey

Artifacts that affect Mermonkeys

This list does not include Artifacts that affect all Magic towers.

Artifact	Common effect	Rare effect	Legendary effect
Fata Morgana	Mermonkey range, pierce, projectile lifespan, and ability cooldown speed increased 25%. Mermonkey projectiles reflect off map borders. Adds a 0-1-1 Mermonkey to your Party	Mermonkey range, pierce, projectile lifespan, and ability cooldown speed increased 35%. Mermonkey projectiles reflect off map borders. Adds a 0-2-1 Mermonkey to your Party	Mermonkey range, pierce, projectile lifespan, and ability cooldown speed increased 50%. Mermonkey projectiles reflect off map borders. Adds a 0-2-0 Mermonkey to your Party
Follow Me	Dart Monkeys, Boomerang Monkeys, Bomb Shooters, Tack Shooters, Super Monkeys, Druids, and Mermonkeys follow cursor like a Dartling Gunner with a turn rate of 180, and constantly fire as long as Bloons are on screen. Attack speed reduced by 17%	Dart Monkeys, Boomerang Monkeys, Bomb Shooters, Tack Shooters, Super Monkeys, Druids, and Mermonkeys follow cursor like a Dartling Gunner with a turn rate of 300, and constantly fire as long as Bloons are on screen. Attack speed reduced by 9%	Dart Monkeys, Boomerang Monkeys, Bomb Shooters, Tack Shooters, Super Monkeys, Druids, and Mermonkeys follow cursor like a Dartling Gunner with a turn rate of 500, and constantly fire as long as Bloons are on screen. Attack speed reduced by 5%

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 section was last updated for: version 53.2

Mermonkeys are amphibious towers that have a large variety of synergies with other towers. They fire tridents that act like a mini Hydra Rocket Pod, and gain different attacks as they level up to serve many different niches in the mid to lategame. Its base tower is very strong for its cost despite its relatively slow speed and low range when not placed in water, two-shotting most early-game Bloons.

• Mermonkeys have very high power, but can struggle with range. They gain a significant range boost upon being placed in water and can gain a colossal range boost by stacking multiple Echosense Network mermonkeys.
• The top path focuses on pierce, unlocking the abyssal creature. It attacks with multiple high pierce tentacles and enhances the pierce of nearby monkeys.
• The middle path unlocks water based attacks. The tridents now deal freezing damage and do even more damage the further they travel. It gains an ability to fire a huge stream of bouncing ice balls. Range greatly benefits the tower, allowing it to fire at bloons where it would deal the most damage. It also benefits from walls, allowing the ice balls to re-hit targets much more often.
• The bottom path allows the Mermonkey to support other towers. The song it sings hypnotizes nearby bloons, causing them to circle around the mermonkey for a significant amount of time, and detonates all damage-over-time effects on the target, limited in damage but letting those effects be re-applied. It later can echo the song from a totem, allowing it to be re-positioned and its timing to be reset, and have the song buff Heroes and Magic Monkeys.

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.

Early access videos

Posted on 28th July 2024

• Boltrix
• Dabloon
• Ethan Reid
• HBomb
• ISAB
• Mehalic POPs
• SJB
• Tewtiy

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

In other languages

This section was last updated for: version 49.2

Name

Language	Text	Notes
Arabic	ميرمانكي	—
Danish	Havabe	—
German	Meeraffe	—
Spanish	Siremono	—
Spanish (Latin America)	Tritomono	—
Finnish	Merenapina	—
French	Siringe	—
Italian	Sirenscimmia	—
Japanese	人魚モンキー	—
Korean	바다원숭이	—
Dutch	Zeemeeraap	—
Norwegian	Havape	—
Polish	Małpka syrenka	—
Portuguese (Brazil)	Macaquático	—
Russian	Морбезьян	—
Swedish	Havsapa	—
Thai	เมอร์มังกี้	—
Turkish	Deniz Maymunu	—
Chinese (simplified)	人鱼猴子	—
Chinese (traditional)	美人魚猴	—

Description

Language	Text	Notes
Arabic	قرد بحري يرمي بالرمح السحري ثلاثي الرؤوس ويستعين بقوة الأعماق لإلحاق الضرر أو الدعم أو تنظيف البالونات. برمائي، لكنه يزدهر في الماء.	—
Danish	Bevæbnet med en magisk trefork kan Havets abe påkalde dybdernes magt til skade, støtte eller bloon-oprydning. Amfibie, men trives i vand.	—
German	Ein magischer, einen Dreizack schleudernder Meeresaffe, der die Kraft der Tiefe herbei beschwört, um Schaden anzurichten, sich Unterstützung zu holen und Bloons wegzuräumen. Amphibisch, aber blüht im Wasser auf.	—
Spanish	Un mono marino mágico que lanza tridentes e invoca el poder de las profundidades para causar daño, brindar apoyo o acabar con los bloons. Es anfibio, pero progresa en el agua.	—
Spanish (Latin America)	Un mono del mar que arroja tridentes mágicos y convoca el poder de las profundidades para causar daño, apoyar al equipo o eliminar bloons. Es anfibio, pero prefiere el agua.	—
Finnish	Maagista atrainta heittävä merten apina kutsuu syvyyksien voimaa vahinkoa, tukea tai bloonien puhdistamista varten. Pärjää maallakin, mutta loistaa vedessä.	—
French	Singe de la mer lanceur de trident magique qui fait appel à la puissance des eaux profondes pour infliger des dégâts, apporter un soutien ou éliminer les Bloons. Amphibie, mais il préfère l'eau.	—
Italian	Una scimmia che brandisce un tridente magico e che invoca il potere degli abissi per infliggere danni, dare supporto o fare piazza pulita di bloon. È un animale anfibio, ma preferisce vivere in acqua.	—
Japanese	魔法の三又槍を投げる海のモンキー。深海の力を使ってダメージを与え、サポートし、ブルーンを一掃する。地上と水中の両方に配置できるが、水中での方がより効果的に活躍する。	—
Korean	심해의 힘을 빌려 마법의 삼지창을 던지며 공격하거나, 다른 원숭이를 지원하거나, 풍선을 처리하는 원숭이입니다. 뭍과 물에 모두 배치할 수 있지만 물에서 더 활약합니다.	—
Dutch	Een magische drietand werpende zee-aap die de kracht van de diepten aanroept voor schade, ondersteuning of het opruimen van Bloons. Amfibisch, maar gedijt vooral in het water.	—
Norwegian	En magisk treforkkastende sjøape som bruker dypets kraft for skade, støtte og bloonrensking. Amfibisk, men trives veldig godt i vann.	—
Polish	Morska małpka rzucająca magicznymi trójzębami. Potrafi wezwać potęgę głębin dla lepszego ataku, wsparcia i zdolności przebijania blonów. W wodzie czuje się najlepiej, ale na lądzie też sobie poradzi.	—
Portuguese (Brazil)	Um macaco do mar arremessador de tridente mágico que chama o poder das profundezas para causar dano, dar suporte ou acabar com Bloons. Anfíbio, mas prospera na água.	—
Russian	Волшебная морская обезьяна, которая может метнуть трезубец и призвать силу глубин, дабы нанести урон, поддержать союзников или зачистить шары. Амфибия, но лучше всего чувствует себя в воде.	—
Swedish	En magisk treuddkastande apa från havet som åkallar kraften från djupet för skada, understöd eller Bloonupprensning. En amfibie, men trivs i havet.	—
Thai	ลิงที่ขว้างตรีศูรวิเศษจากทะเลที่เรียกพลังจากความลึกเพื่อสร้างดาเมจ การสนับสนุน หรือกวาดล้างบลูน ถึงจะเป็นตัวสะเทิ้นน้ำสะเทินบกแต่ก็เก่งที่สุดในน้ำ	—
Turkish	Denizlerin sihirli yaba fırlatıcı Maymunu, hasar vermek, destek olmak veya Bloon’ları temizlemek için derinliklerden gelen gücü çağırıyor. O bir ambifi ama denizde çok başarılı.	—
Chinese (simplified)	一只会投掷魔法三叉戟的海猴子，它能召唤深海的力量来造成伤害，提供支援并清理气球。虽然是两栖动物，但水域依然是它最如鱼得水的地方。	—
Chinese (traditional)	一隻使用魔法三叉戟的海猴子，可召喚深淵的力量來造成傷害、提供支援或清理氣球。雖然牠屬於兩棲塔，但放置在水中時會更加強大。	—