Strategy:Finn (BATTD)

Finn is initially primarily an early-game character that can help clear the early rounds, but struggles once MOABs appear. However, he can also be used for boosting Missile through his Bound by Word when made permanent with Royal Promise, or skip upwards of hundreds of rounds with Big Hearted Hero once he reaches level 7.

Builds

The topmost trinkets for recommended loadouts should be prioritized. While builds do become more effective the more levels the player has, generally each consecutive level has diminishing returns as weaker trinkets are used for remaining slots.

Income

Starting out, Finn is the only sword user the player will have, and he is far more effective for an eco build than Jake. As other suitable characters for an eco build cannot be acquired too easily, Finn is the most reliable choice for an eco build. Even before acquiring trinkets, the player can use Bro Fist for extra cash per round. The first priority for setting up this build should be Thief King's Dagger since it will generate income simply from Finn attacking. It is highly recommended that pierce and damage buffs are minimized in favor of Attack Speed so that Finn can generate as much cash as possible by attacking more. Afterwards, other income trinkets can be pursued for boosting the potency of this build. Later on, when the player acquires C4 Charlie or Warrior Bubblegum, it is generally recommended that they are used for income instead, as Finn can be utilized either for high DPS or once he reaches level 7, for round skipping.

Recommended loadout:

• Any attack speed sword without damage, preferably Finn Sword or if unavailable, Grass Sword
• Thief King's Dagger
• Banana Replicator
• King of Ooo's Scepter
• Baker's Shard
• Mystery Cave Pick
• Other attack speed trinkets without damage, such as Cosmic Gauntlets

Missile

If the player has Missile, it synergizes well with Finn's Bound by Word as it is the only character upgrade that affects Missile, which when made permanent with Royal Promise, makes him the best character for the Missile, letting him clear out MOABs with ease and heavily damaging the BAD. With this build, it is highly recommended that attack speed trinkets and weapons, such as Finn Sword and Baker's Shard, are stacked in addition with the Missile, for making the Missile attack as often as possible. Although the Missile is the primary source of damage for Finn, his melee attacks still contribute a fair amount of damage. His main downsides are that he needs Princess Bubblegum for this build performing at a viable level, the Missile cannot immediately attack bloons that are too near the start or end of a track, and that besides his sword swipes, his attacks are primarily single-target focused when more than one BAD is on screen.

Recommended loadout:

• Finn Sword or if unavailable, Grass Sword
• Missile
• Baker's Shard
• Bubblegum's Hair
• Attack speed trinkets such as Heart Gauntlets, Doom Gauntlets, Cosmic Gauntlets, and Black Bow Tie
• Engineers Blueprints
• Vorpal Hand
• Glasses of Nerdicon

Big Hearted Hero

Big Hearted Hero can be used for skipping hundreds of rounds by the use of a glitch. This glitch requires Finn at level 7, and the easiest and most effective way of causing this glitch is by leaking at least 2 bloons while he has Big Hearted Hero purchased, then rapidly pressing the start round/speed up button after leaking enough lives to activate Big Hearted Hero. Using an autoclicker is recommended for this for making it more consistent, but skipping a full game of Impoppable's worth of rounds is still possible without an autoclicker, namely for iOS users. While most maps in the game can be skipped by this glitch, two maps in particular, Mystery Doors and All Aboard, cannot be completely skipped on Impoppable with this glitch. Mystery Doors will skip about 40 rounds while All Aboard will only skip around 7 rounds.

When actually setting up the skip, in Impoppable, having an eco C4 pop 55 bloons, then selling him before placing Finn out of range of the track and upgrading Big Hearted Hero, should provide ample time for performing the skip. On Extreme difficulty, popping 48 bloons with C4, then leaking all the remaining bloons in rounds 2 and 3 will give the player the most amount of time without much setup. In Martian Games, popping around 90-100 bloons before setting up Finn and leaking the remaining bloons typically lets the player perform the glitch with ample time.

During seasonal events with special rewards at the end for protecting a crate, losing or activating a preventative measure for a Game Over will not actually destroy the crate. Thus, Royal Promise can be used as a way of activating Big Hearted Hero, but instead of leaking two bloons, all remaining bloons in a round must be cleaned up quickly after breaking Royal Promise. This can be done with Hot Dog Knights or by simply letting the bloons reach Finn.

Recommended loadout:

• Soul Stone
• Brain Food
• Spoon of Prosperity
• Bag of Lollies
• Peacock Hat
• Mind Games
• Red Cowboy boots
• Monkey King's Robe

Any remaining slots can be used for attack speed or range trinkets.