The Zeppelin of Mighty Gargantuaness, commonly abbreviated as the "Z.O.M.G", is a MOAB Class Bloon that first appears in Bloons Tower Defense 5. It is a large blimp that's mainly black in color with a cropped skull on top. The Z.O.M.G. is very hard to pop and is the strongest Bloon and MOAB Class Bloon in Bloons TD history as of now. (In BMC, it's Bloonarius the Inflator.) When the Z.O.M.G is almost popped, it shows a Bandage on its skull and the left engine on fire. It first appears on Round 85 in Bloons TD 5, the final round on Hard. It has an extremely high RBE of 16,656 and takes 4,000 damage to pop it, whereupon it releases 4 B.F.B.s. Without a proper defense, its children can rush through the level and end the game. On Round 85 in Bloons Tower Defense 5, there is only one Z.O.M.G. (five in Impoppable Difficulty), but in later rounds there are multiple Z.O.M.G.s, increasing even more and more in later rounds.
While bloons can normally be allowed to leak with loss of life, the Z.O.M.G. has an RBE (red bloon equivalent) of 16,656, making this strategy practically impossible even with the use of Healthy Bananas. However, it is possible to leak a Round 85 Z.O.M.G. whole and survive with the use of several Support Chinook and supply drop abilities, though this is only possible on Steam or mobile.
Like the M.O.A.B. and the B.F.B, the Z.O.M.G layer also has 4 health stages, as you can see in the picture on the right. When you reduce 650 health from the B.F.B layer and the Z.O.M.G layer, the B.F.B layer is almost popped, while the Z.O.M.G layer doesn't have even a little damage. You can see little damage on the Z.O.M.G when you reduce to it more than 1,000 hits and less than 2,000 hits. Between 2,000 hits and 3,000 hits, the Z.O.M.G has serious damage. Between 3,000 hits and 4,000 hits, the Z.O.M.G has critically serious damage and there is a bandage on its skull. After 4,000 hits, the Z.O.M.G layer is destroyed, and it releases 4 Brutal Floating Behemoths (B.F.B.s). It should also be noted that in Bloons Monkey City (or with BTD 5 freeplay) the higher the round you are the more indestructible the Z.O.M.G become. This is very noticeable if you are playing on contested territory.
In the picture of the Z.O.M.G. on Bloons Tower Defense 5 Mobile as seen to the right, it's eyes and skull are missing and the fore-end is flat instead of pointy.
In Bloons TD 5 Mobile, it moves slightly forward when it is at its last stage of health. This is unintentional.
Z.O.M.G.s will appear no earlier than round 85 (the final round in Hard Mode), unless in Daily Challenges or Mastery Mode.
It takes 364 piles of Road Spikes to pop the ZOMG layer.
It takes 1515 piles of Road Spikes the pop the Z.O.M.G completely.
The RBE in game suggests that the Z.O.M.G. layer has 4000 health but in reality it takes 5 MOAB Assassins, 21 road spike piles and 4 explosive pineapples to pop the first layer, because the MOAB Assassin deals reduced damage (753 damage) per shot.
For humor, the Z.O.M.G.'s last stage of health depicts a bandage on the skull.
The Z.O.M.G, like other M.O.A.B-class Bloons, will increase in strength and speed each round after Round 103.
In the official trailer of BTD5, the Z.O.M.G. appears for only 2.5 seconds.
BTD1 has a total RBE of 30160, approx. 2 Z.O.M.G's.
If the player uses a Sabotage Supply Line before a Z.O.M.G. comes out, it only slows the Z.O.M.G., the first B.F.B. of the 4 that come out, and the first M.O.A.B. of the 4 that come out of the slowed B.F.B.s. If the Ability is used while a Z.O.M.G. is out, the first of the 4 B.F.B.s is the only one not slowed, and the same with the M.O.A.B.s from the slowed B.F.B.s.
In the trailer for Bloons TD 5 iOS, it is shown to have a mouth, as it is in the Ninja Kiwi avatar unlocked at Rank 40.
This M.O.A.B. Class Bloon can be sucked by the BloonchipperSuper Wide Funnel upgrade, in all games featuring this bloon except for BTD Battles Mobile.
In BTDB, its income change is -$1500, the greatest reduction of any bloon. This was recently changed on BTD Battles Mobile.
It takes 14 MOAB-SHREDR(0-3) spike factories to take down a whole Z.O.M.G and bloons it spawns on Monkey Lane.
It takes 9 Ground Zero bombs to destroy the outer layer of a Z.O.M.G. and 14 to destroy it and all bloons it spawns.