B.O.S.S.

B.O.S.S. (Blimp Of Super Airships) is a M.O.A.B. class bloon, and is the final boss of Caleb40043's BTD6, appearing on Round 150. It takes 25,000 hits to pop. It appears as a Red Blimp with a Z.O.M.G.s shape, the skull is also vertical and is almost inverted, the eyes are blue, and the skull is black. It moves at half the speed of a Z.O.M.G.. It doesn't have any parents or children. (It's a final boss!) Instead of popping when destroyed, it will stop for about 5 seconds, and the music will stop. After the five seconds, it's eyes will begin to flash black and white, the skull's eyes will also turn off. After another five seconds, explosions appear around it, then finally exploding, turning the screen white.

Attacks
Blimp Horde: It will stop for a moment and the same sprite as a Monkey Town's transmissions will appear above it, then a rush of 50 M.O.A.B.s will appear from the start of the track.

Eye Flash: It will flash it's eyes, turning the screen white for 2 seconds, so you can't see your towers, the track, or the blimp.

Freeplay Horde: Uses this rarely, when using this, it uses the same animation as Blimp Horde, but the signals are red, then a rush of either 200 Ceramic Bloons (70%), 100 M.O.A.B.s (50%), 25 B.F.B.s (25%) or 10 Z.O.M.G.s (10%) will appear.

Last Bloon Resort: When it's HP reaches 2,500, the bloon will stop for a moment, then it's eyes will turn black and will become the speed of a Pink Bloon! Finish it off before it can escape!