Gwendolin believes there hasn't yet been a Bloon problem that can't be solved with fire. Lots of fire.
~ Bloons TD6

Gwendolin is a Hero in the game Bloons TD 6. She specializes in fire-based weaponry and is unlocked at experience level 14. She has short range, and her main attack is a medium-range fire blast from her flamethrower whose shots can pierce up to 3 Bloons. Due to her attack being fire based, she cannot pop Purple Bloons, at least until level 16. She is also unable to pop Camo Bloons without support, except with her abilities.

She costs $765 on Easy, $900 on Medium, $970 on Hard, and $1,080 on Impoppable.

In the 6.0 update, she was given a new skin, named Scientist Gwendolin, with new voice lines and appearance. She wears a blue and white lab tunic and her hair is blue instead of orange. She holds a purple potion instead of her normal fuel. The skin costs Btd6monkeymoney2500 to unlock.

Gwendolin Name

Gwendolin's unique name tag, featuring yellow instead of blue.


Gwendolin will start upgrading herself every round upon placement. She earns more XP each round to unlock her next upgrade irrespective of how many bloons she pops. Her upgrades can also be immediately bought with cash, though the amount of cash required to purchase the next upgrade will typically increase as the upgrades get higher, making self-upgrading an important element for her overall power.

The following are the upgrades and their XP required to level up:

  • Level 1 - Blasts Bloons with fire from her pyro gun (flamethrower).
  • Level 2 - Slightly increases popping power and range.
  • Level 3 - Unlocks Cocktail of Fire. When used, this ability will throw a flaming bottle onto the track that will continue to burn for about half the cooldown of the ability. When bloons are in Gwendolin's range, she aims it at the furthest bloons advanced. When there are no bloons in her range, or if they're camo bloons that she cannot detect, she throws the cocktail to a random spot in her range.
  • Level 4 - Unlocks "Heat It Up," a passive ability that periodically creates a powerful blast of fire around Gwendolin that pops Bloons, and adds fire to nearby Monkeys' attacks. This occurs every 30 shots she makes. This buff allows nearby affected towers to pop lead bloons and gives them +2 pierce.
  • Level 5 - Increased popping power.
  • Level 6 - Attacks can sometimes cause a burn effect on a targeted bloon.
  • Level 7 - Increased range for "Heat It Up."
  • Level 8 - Shoots two flames per shot.
  • Level 9 - Initial hit for every blast pops one extra bloon layer.
  • Level 10 - Unlocks Firestorm. This ability ignites all bloons, burning about 2 layers per second. It also does 10 damage per second to MOAB class bloons.
  • Level 11 - Increased attack range.
  • Level 12 - Increased attack speed.
  • Level 13 - Greatly increased popping power.
  • Level 14 - Cocktail of Fire does extra damage.
  • Level 15 - Increased attack speed.
  • Level 16 - Allows Gwendolin to pop Purple Bloons, and Firestorm lasts longer.
  • Level 17 - Nearby monkeys can pop one extra bloon layer per attack when under the effect of "Heat It Up."
  • Level 18 - Increased attack speed.
  • Level 19 - Shoots 3 blasts of fire per shot.
  • Level 20 - Firestorm does hugely increased damage. The flames now inflict multiple layers of damage at a time to bloons and do 25 damage per second to MOAB class.

Activated AbilitiesEdit

  • Cocktail of Fire - Throws a molotov cocktail, which generates a fiery explosion that burns any Bloon that passes through the flames
  • Firestorm - Covers the entire screen with fire to damage Bloons


  • Her burn effect is a powerful ability she gains early on, putting her on 'Strong' targeting allows her to tear through early rounds, but be careful to defend from Purple Bloons.
  • Cocktail of Fire is a very powerful ability, being able to destroy entire Rainbow Bloons, yet the targeting is random and often unreliable for targeting bloons that have escaped through the primary chokepoint. (However she will throw the cocktail on the bloons she is targeting so timing it will can be very helpful)
  • Once Gwendolin hits level 17, her Heat it Up ability gives +1 layers of damage to all nearby tower, being very powerful with high fire rate towers.
  • Heavy ceramic rushes (especially on Round 63, 76 and 78) can be stopped very quickly with Cocktail of Fire and Firestorm.
  • Firestorm does 255 damage at level 20, enough to instantly destroy the initial M.O.A.B. layer and dealing heavy damage to D.D.Ts .

In-Game QuotesEdit

Original GwendolinEdit

When you place her on the map:

  • "With enough fuel and air, everything burns!"
  • "We have ignition!"

When selecting her:

  • "Fired up!"
  • "Yes!"
  • "What next?"
  • "What's up?"
  • "Yeah?"
  • "Hey!"
  • "I wouldn't do that if I were you." (when annoyed)
  • "You're on my list now!" (when annoyed)

When leveling up:

  • "Yes!"
  • "Haha!"
  • "All right!"
  • "Oh, sweet!"
  • "Awesome!"
  • "Oh yeah!"
  • "Nice!"
  • "Alright!"
  • "It doesn't get hotter than this!"- Level 20

When MOAB Class Bloons appear:

  • "MOAB! Burn it!"- MOAB appearance
  • "BFB! Burn it!"- BFB appearance
  • "ZOMG! Burn it!"- ZOMG appearance
  • "DDT! Burn it!"- DDT appearance
  • "BAD? Gonna need more gas!" - BAD appearance

When popping a MOAB Class bloon:

  • "Incinerated!"
  • "Bloon-cinerated!"

When using an Activated Ability:

  • "Fire bomb!" - Cocktail of Fire
  • "It's all on fire now!" - Firestorm

When leaking a bloon:

  • "They're leaking!"
  • "Stop them!"

Scientist GwendolinEdit

Scientist Gwendolin has a whole new set of voice lines.

When placed:

  • "I like blue hair... and blue fire!"
  • "I've made some minor modifications!"

When you select her:

  • "Hello!" (excited)
  • "Hello!" (less excited)
  • "Can I help you?"
  • "Office hours!"
  • "This is it!"
  • "What?!" (when annoyed)
  • grunts* "I'm thinking!" (when annoyed)

When leveling up:

  • "Eureka!"
  • "Eur...eka!"
  • "Incredible!"
  • "This.. is incredible!"
  • "Firestorm max! Let's use it! " - level 20

When MOAB class bloons appear:

  • "That.. looks very flammable!"

When popping a MOAB class bloon:

  • "Aww.. no hydrogen!"

When using an activated ability:

  • "I'll put this here!" - Cocktail of Fire
  • "You said Firestorm?" - Firestorm

When leaking a bloon:

  • "No.. no... NO!"

Version HistoryEdit


Change balloon Scientist Gwendolin Skin added

Nerf Gwendolin's Heat It Up will trigger less often and will no longer refresh while Heat It Up is already in effect.

Change balloon Gwendolin's burn effect on MOAB-class bloons will now display fire on affected MOAB-class.



  • Gwendolin is one of the only female heroes currently. The heroes before BTD6 could be male/gender-neutral, although Dart Monkey and Wizard Monkey are male in the Super Monkey Fan Club description and Wizard's name. Female monkeys also exist in Bloons Adventure Time TD.
    • However in the 2.0 update, there is a second female monkey making a cameo on the patch notes. In 7.0, another female hero was added.
    • It has been confirmed that all monkeys except for heroes and the patch notes one are all genderless. [1]
  • She's also the only Hero to have her name spelled in yellow instead of blue in the preview images and wallpapers.
  • As with Quincy, Gwendolin's in-game quotes confirm the correct pronunciation of the MOAB Class Bloons; MOAB is said as one word (pronounced as "moh-AB"), while the BFB, ZOMG, DDT, and BAD are pronounced by their initials.
    • Despite this, Striker Jones pronounces MOAB by its initials, so MOAB could be accepted both ways.
    • Before the 5.0 update, Gwendolin was also the only Hero so far who calls out the BAD by name.
      • This is no longer true due to the Cyber Quincy skin being introduced in 5.0.
  • Gwendolin used to be the most expensive hero, costing $900 on Medium. With the 2.0 update, Captain Churchill became the most expensive hero, costing $2000 on Medium.
  • Whenever a MOAB-Class bloon appears, she always says "Burn it!", except for when a B.A.D. shows up.
  • One of Gwen's in-game quotes, "With enough fuel and air, everything burns!" is a possible reference to the Joker's quote from The Dark Knight; "Everything burns!"
  • Before 6.0, you could get Gwendolin to throw three Cocktails of Fire instead of one by having all Monkey Knowledge in the Heroes section and placing her near a 5/X/X Monkey Sub.
  • Gwen had made appearance in one of Ninja Kiwi's Facebook account posts regarding July 4th 2019. She is seen roasting grilled pineapples on the barbecue at night. She also holds a spatula and a glass of orange juice while a fireworks display is set. Link.
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