A.Z.O.N.

The Aquatic Zeppelin of Neptune is a special blimp only appearing in Champion's Challenge. It's immune to water buckets, and has 500 HP. When popped it spawns 2 M.O.A.B. and 10 Aqua Bloons.

Attacks

 * Hydro Pump: A burst of water comes out of the mouth, damaging every tower but Water Monkeys for 20 HP.
 * Water Buckets: Throws water buckets everywhere. If you don't have Water Monkeys, your towers are hopeless. Does 15 damage each bucket.