Bloonarius the Inflator is an Event-only MOAB-Class Bloon found in the Bloonarius event in Bloons Monkey City. In the battle, Bloonarius's health is displayed on the top. You won't receive a tile for completing the level. Upon popping Bloonarius, you will see Bloonarius saying "I'll be back!" and receive the relative tier of CT Milestone worth in rewards. Every time you defeat Bloonarius, its health and the strength of his spawns increases. The Bloon Beacon is needed to summon the boss out of hiding after defeating it. It also appears in BTD5 Mobile during the Boss Event on Monkey Lane.