Heroes

Heroes are special versions of towers that can first be acquired past Rank 30. They cost as much in-game as the tower, and unlocking them requires Monkey Money. By default, you can only have 1 hero total placed in-game, which increases by 1 every 30 ranks, to a cap of 4 through rank-ups.

Dart Monkey Hero
The Hero for the Dart Monkey, without any boosts, is very similar to the 1-3 Dart Monkey, except it throws 5 darts, each with 8 pierce.

Tack Shooter Hero
The Hero for the Tack Shooter has a Tack Gun that shoots two tacks forward and two at a 30º angle pointing away from the center on each side. Its tacks have 2 pierce.

Sniper Monkey Hero
The Hero for the Sniper Monkey has two sniper rifles, which it alternates between, allowing it to attack 90% faster than the regular Sniper Monkey. Otherwise, it's exactly like the 2-0 Sniper without boosts.

Boomerang Thrower Hero
The Hero for the Boomerang Thrower throws two glaives that have 20 pierce each and can pop frozen bloons. It also attacks 10% faster than a Glaive Thrower.

Ninja Monkey Hero
The Hero for the Ninja Monkey throws three shurikens that pop 7 bloons each, as well as a flash bomb that can pop and stun up to 80 bloons.

Bomb Tower Hero
The Hero for the Bomb Tower throws bombs at bloons which explode upon impact. Bombs have 70 popping power and release fragments that can pop up to 3 bloons each.

Ice Tower Hero
The Hero for the Ice Tower uses a freeze ray to freeze groups of bloons solid, popping them once before freezing. It has much longer range than a 3/x Ice Tower.