The Inflator

Recently there has been reports of a major disturbance to the North of Monkopolis, our scouts say that a huge base by the Bloon mountains up in the frozen North is constrcting a huge blimp, and preparing to lay siege to Monkopolis in a month. We have sent our master strategists to arrange a counter attack, but they were quickly captured by the bloons and taken prisoner. It is up to you to prevent the invasion of Monkopolis and defeat the bloon menace.

THE INFLATOR
The Inflator, is a Blimp prototyped by a lab of Bloons, it was tested in a computer simulation, and found completely indestructable by the Bloon scientists. Luckily you have forced them to send it out before it was completed and is not indestructable yet...

It was made to safely transport bloons to the city, where they will conquer and enslave the residents. It has the ability to re-inflate bloons and spawns them behind itself very often. The Inflator has a grand total of 1,000,000,000 health, but moves extremely slow. It is entirely immune to ice towers, and takes extra damage from heated projectiles. It approaches on the special mission, Northern Menace, at round 100.

Upon its unlikely death, it will release its cargo; 10 MOABs and a single Regrow, and camo Ceramic Bloon named Carl Archibald Fitzgerald, his name will float above his head until he is popped.