Z.E.R.O.

The Zeppelin that Erases Rights and Order is the secret boss of the No Escape mission. It moves at a speed between that of the Yellow bloon and that of the Rainbow bloon. It appears on round 13, replacing the stream of Z.O.M.G.s that the round was originally. It is a Support Chinook edited to have red where there is blue, some additional guns, and an A.Y.A.K.O.-style fuselage (stretched out M.O.A.B.). The Z.E.R.O. spawns nothing when destroyed, which happens after getting hit 5000 times.

Abilities

 * Dart Blast: fires a quad-volley of darts at your towers, each one doing 8 HP of damage.
 * Dart Cannon-fire: rapidly fires darts out of a machine gun positioned up front on the Z.E.R.O. Each one does 4 HP of damage
 * Whirlwind: hovers over one spot, whirling the air underneath it, then, when it moves, it releases a whirlwind that blows towers away. If a monkey collides with a machine, vehicle, or building, it does 5 HP of damage to both. THIS ATTACK CAN BREAK TI SHIELD!

How to Unlock the Z.E.R.O.

 * 1) Beat No Escape without losing a single life.
 * 2) Beat Operation Heaven One without the Battleship losing more than 10% max HP.
 * 3) Replay No Escape, but leak the first bloon that comes on the map.
 * 4) On round 13, the Z.E.R.O. will appear.

Trivia

 * The BGM of this boss fight is Unlimited Blade Works, by Kenji Kawai.
 * The Z.E.R.O. appears after the first minute of the song, which gives you time to get what you need up and running before you go about tearing the Z.E.R.O. to pieces.
 * The Z.E.R.O. is immune to Road Spikes, even the ones from the Spike Factory, so watch out!