Gwendolin attacks by shooting fireballs at Bloons from her flamethrower. Initially, each flame pops up to 2 Bloons at a rate of every 0.5 seconds. Almost every level improves her flame attack. All of her attacks cannot pop Purple Bloons without support until she reaches at least level 16, and all of her activated abilities can affect Camo.
Starting at level 4, she gains a passively generating Heat It Up attack that is triggered every 40 shots from her flamethrower, creating a high-pierce radial fire attack that additionally buffs nearby towers with +1 pierce and gives the ability to pop frozen and Lead Bloons. Starting at level 17, the buff grants additional damage to all Bloons, especially Lead Bloons.
Cocktail of Fire (level 3) — Drops a cocktail onto a targeted location within her range, creating a blaze (similar to Wall of Fire) that constantly damages non-Purple Bloons that pass through it.
Firestorm (level 10) — Damages and burns all non-Purple Bloons on screen and immediately applies a Heat It Up effect for all other towers on screen.
Gwendolin's main attack is a flamethrower that shoots flame projectiles. It deals 1 Fire-typedamage and has 2 pierce, and she attacks every 0.5 seconds.
Levels
Level
Effect
2
Pierce increases to 3.
5
Pierce increases to 4.
6
Projectiles inflict damage over time that deals 1 Fire-type damage every 1.5 seconds for up to 3.1 seconds.
8
Shoots two projectiles at a time in parallel.
9
Damage increases to 2. Starting at this level, each level increases burn duration by 1 second and damage per tick by 1. It has 4s duration and 2 damage at level 9 and reaches 15s duration and 13 damage at level 20.
11
Range increases to 41.
12
Attack cooldown reduces to 0.4s.
13
Pierce increases to 8. Projectile speed increases to 250 units/s. Projectile lifetime increases to 1.25 seconds.
Heat it up unlocks at level 4. It is a burst of fire that damages nearby Bloons and buffs nearby towers. The attack triggers at Gwendolin's position every 40 shots or after 1.5 seconds since it last triggered, whichever takes longer. It has 100 pierce, 38 range, and deals 3 damage. The buff gives towers +1 pierce and allows them to pop Lead Bloons and frozen Bloons, and lasts for 8 seconds.
Levels
Level
Effect
4
3 Damage, 38 range, 100 pierce
7
Damage and buff radius increased to 43
11
Damage and buff radius increased to 46
12
Damage increased to 10.
15
Damage increased to 20.
16
Can now damage Purple Bloons.
17
Buff now gives +1 damage and +2 damage to Lead Bloons.
Cocktail of Fire unlocks at level 3. It causes Gwendolin to throw a molotov cocktail on the track, creating a Wall of Fire-like projectile that rapidly damages Bloons that pass through it. The cocktail's landing point can be set to anywhere within Gwendolin's range using the targeting option, even behind line of sight blockers. It deals fire-type damage every 0.2 seconds to up to 20 Bloons at a time, lasts for 12 seconds, and has a 30-second cooldown.
Levels
Level
Effect
3
Deals 1 damage every 0.2 seconds to 20 bloons per tick in a radius of 15.
7
Deals damage twice as fast and can hit up to 40 Bloons per tick. Radius of the fire wall increases to 20.
11
Can hit up to 60 Bloons per tick. Targeting range increases slightly.
14
Deals 2 damage per tick instead of 1 and now inflicts a damage over time effect on MOAB-Class Bloons that deals 5 damage every second for 10 seconds.
16
Can now damage Purple Bloons.
20
Deals 5 damage per tick with the fire and 8 damage per tick with the damage over time effect.
Firestorm
Firestorm unlocks at level 10. It causes Gwendolin to hurl a firestorm throughout the entire map, burning and damaging all non-Purple bloons (until Level 16+) and triggering Heat It Up to every tower. The initial damage inflicts 5 damage, 20 to MOAB-class. Afterwards, a burn damage-over-time is applied, dealing 2 damage every 0.5 seconds to non-blimps and 15 damage every 1.0 seconds to MOAB-class, lasting up to 8 seconds. The ability has a cooldown of 60 seconds.
Levels
Level
Effect
10
5 initial damage, 20 to MOAB-class, 2 damage per 0.5 second to bloons, 15 damage per 1 second to MOAB class, 8 second duration
16
Affects Purples, burn lasts for 10.4 seconds and does extra damage per tick (bloons: 5, MOAB-class: 20).
17
Gains the improved Heat It Up effect unlocked at Level 17.
20
Initial damage increased to 10 to bloons, 50 to MOAB-class. Burn does extra damage per tick (bloons: 10, MOAB-class: 30).
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: Elaborate on use cases and how to use her effectively
Gwendolin stands out in strategies that need consistent lead-popping against DDTs and do generally low base damage and attack quickly, as assisted by her Heat-It-Up, plus multiple ways to pop large groups of non-Purple Bloons. Place her close to the main defenses.
Update history
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Heat It Up: Now also grants a +1 damage buff to Lead Bloons and DDTs for the duration
17
Description changed ― "Heat it up gives affected Monkeys 1 extra layer pop." → "Heat it up empowers affected Monkeys to pop 1 extra layer, and do +2 damage to Lead Bloons."
Note: Description is incorrect about the damage to Lead Bloons
Gwendolin’s Heat it Up! attack/buff has been sitting in a weird spot where it would benefit from attack speed but does not because of the cooldown which prevents it ever having full uptime. This rework makes her have a roughly similar uptime at all levels without being buffed, however she will now benefit properly with increased uptime depending on any rate modifiers applied to her. A fully juiced Gwendolin around level 15 or 18 should now be capable of achieving 100% buff uptime — Update notes
”
Levels
Changes
4+
Heat it up: cooldown reduced ― 15s → 4.5s
4–11
Heat it up: shots required to trigger increased ― 30 → 60
12–14
Heat it up: shots required to trigger increased ― 30 → 70
15–17
Heat it up: shots required to trigger increased ― 30 → 90
18+
Heat it up: shots required to trigger increased ― 30 → 110
The last Gwendolin change didn't come through as well as intended for a number of reasons, so while keeping true to the intention behind this change it has been improved across the board to properly buff this again — Update notes
As the Firestorm ability itself drops off later anyway, Gwen’s level 17 buff to Heat it Up will now apply to the version granted to all towers by Firestorm as well. — Update notes
”
Levels
Changes
17+
Lv17 Firestorm’s full-map Heat It Up now also benefits from this level’s buff to Heat It Up
Note: Firestorm Heat It Up now grants +1 to Lead and +1 Damage
Similar to Wall of Fire, Gwendolin’s Cocktail gains too much strength in grouped situations too early on and so this power has been pushed to higher levels. — Update notes
As she’s a little average all around these days with other heroes overtaking in the past years, Gwendolin is seeing some improved quality of life, synergization, and extra juice to the initial hit of Firestorm since currently the ability is, well, not heroic enough and the first impact does very little compared to the DoT. — Update notes
”
Levels
Changes
3+
Cocktail of Fire: gains a target selection point, instead of targeting onto Bloons if Bloons in range or otherwise targeting randomly
5-17
Lv5 Pyrotechnics Expert: All Ring of Fire, Signal Flare & Dragon's Breath gain 10% rate & radius (This follows normal buff rules, applying to higher tiers, but not subtowers)
18+
Lv18 Pyrotechnics Master: Ring of Fire, Signal Flare & Dragon's Breath buff increased from 10% to 20%
For now with a noteworthy direct comparison to Brickell and the use cases for these two heroes we have done a price swap keeping the lesser of the two at the lower price point. However as 750 would put gwen on the same cost as Striker Jones and we want starts with base 4 heroes to stay more diverse we have taken her down a little extra on top of that. — Update notes
Removing the stacking aspect of Gwendolin’s burn damage over time, but increasing the damage as she levels up so that it actually scales up in power now. — Update notes
”
Levels
Changes
6+
9+
Main attack: DoT damage increased ― 1 → 2
Main attack: DOT no longer stacks
9
Main attack: DoT damage increased ― 1 → 4
10+
Main attack: DoT damage now increases by 1 per additional level
Gwen’s early game is just too much, especially far too excessive with the right combinations of knowledge / relic buffs so some of this power is being pushed up more with a makeup buff to cocktail at Lv7 where this has started to fall off by. — Update notes
Looking back over her kit, we noticed that we’ve never improved the actual attack itself for Gwen’s Heat it Up. Allowing her to be juiced up with high attack speed in order to spam these supercharged bursts of damage sounds fun and cool, so while noting that this will also increase the uptime of her buff we’re removing the limiter on her Heat it Up rate and pumping up its damage tenfold. — Update notes
”
Levels
Changes
4+
Heat it Up: Pierce reduced ― Infinite → 100
12+
Gwen’s attack rate levels (Lv12, 15, 18) no longer reduce Heat it Up frequency
Gwendolin’s Heat it Up was recently reworked to allow for much more frequent triggering from attacks, however the 4.5s internal cooldown still limits it from being scaled up far so that internal cooldown is now also being reduced. Additionally, Heat it Up’s bonus buff to damage against Lead targets has been improved slightly so we can get more out of that niche. — Update notes
”
Levels
Changes
4+
Heat it Up: Minimum delay reduced ― 4.5s → 1.5s
Heat it Up: No longer fails to apply if the attack runs out of pierce (bug fix)
17+
Heat it Up: Buff to Lead properties increased ― +1 → +2
Gwendolin Level 9 description changed ― Initial hit per blast pops 1 extra layer. → Initial hit per blast pops 1 extra layer. Gains increased burn damage and duration for every level.
“
Taking the opportunity to invest in some fire & water synergy — Update notes
”
Levels
Changes
9+
DoT duration increased by +1s per level
Note: DoT duration now between 4s–15s at Levels 9–20
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![[[Scientist Gwendolin (BTD6)|Scientist Gwendolin]]](/images/thumb/4/45/BTD6_GwendolinPortrait_%28scientist%29.png/96px-BTD6_GwendolinPortrait_%28scientist%29.png)
![[[Harlegwen|Harlegwen]]](/images/thumb/a/aa/BTD6_CircusGwendolinPortrait.png/100px-BTD6_CircusGwendolinPortrait.png)
![[[Firecracker Gwen|Firecracker Gwen]]](/images/thumb/a/a2/BTD6_GwendolinFirecrackerPortrait.png/99px-BTD6_GwendolinFirecrackerPortrait.png)
Gwendolin Firefox Pet
100, Prime Gaming drop 2, Pets Fan Pack (IAP)
Gwendolin Fireball Place & Upgrade
Levels 1–2
Levels 3–9
Levels 10–19
Level 20
Round icon
Square icon
Cocktail of Fire icon
Firestorm icon
Heat it up buff icon
Pyrotechnics buff icon
