Brutal Floating Behemoth (BFB)

"BFBs are enormous and notoriously difficult to pop. Gather your best monkeys and go take one down."

- Description of the "Bigger Bloon Hunter" goal in BMC

The Brutal Floating Behemoth, abbreviated as BFB (B.F.B. in BTD4, The Behemoth in Bloons Pop!), is a high-health blimp stronger than the Massive Ornary Air Blimp, first debuted in Bloons TD 4. It is the third-weakest multi-HP bloon throughout the series, and normally is the second-lowest ranking MOAB-class bloon in the franchise. The BFB has 700 health (400 in BTD4) and will release 4 MOABs once popped. The BFB moves at 0.25x the speed of a Red Bloon, a Lead Bloon, or a MOAB.

Just like its descendants, the 4 MOABs underneath, the BFB can be severely hurt by attacks that inflict extra damage to MOAB-class bloons compared to normal bloons. The BFB is also much larger than a MOAB, making it even easier to be hit by multi-projectile attacks such as Tack Sprayer. Very few attacks that can affect MOABs cannot affect BFBs, but the majority of anti-MOAB-class options are effective counters to the BFB, most notably the Monkey Pirates ability.

BFBs can gain more health depending on the game. In Bloons TD 6, it can become a Fortified BFB, as the fortification layer gives it and its descendents with double health, 1400 health for the BFB layer instead of 700. In addition, Freeplay Mode will slowly accelerate their health and speed every round.

The health of a BFB can be determined through multiple damage stages. Every 1/4 of the BFB's health, 175 by default for the latest iteration of the BFB, it will appear more damaged. These are usually rips and tears on the blimp's skin. The BFB will appear more and more worn out until it is fully destroyed.

The BFB also makes a return in Bloons Pop! since the Version 3.0 update, and can be fought against as part of a boss battle.

Details
As its name suggests:
 * It is brutal, as BFBs can take a lot of hits from MOAB Maulers. It takes 700 hits to pop the outer layer.
 * It floats, since it is blimp-like, just like its child, the MOAB, its parent, the ZOMG, and its grandparent, the BAD.
 * It is large, which is the definition of behemoth.

Although B.F.B officially stands for "Brutal Floating Behemoth", it has a total name count of 11, examples of which are Big Father Bloon, Bad Floating Bloon, Big Floaty Bloon and Big Friendly Bloon (shown in BTD5 Quests).

It is a colossal bloon which can easily be identified by its sinister eyes, blimp-like appearance, red and white color in Bloons TD 4 (red in Bloons TD 5), and its anti-monkey symbol (although in Bloons TD 6 the anti-monkey symbol was replaced with two white boomerang-shaped stripes). In Bloons TD 4, its first appearance is round 60, which is the final round before Freeplay Mode on Medium Difficulty in BTD4. In Bloons Super Monkey 2, it only appears in the last wave of bloon dunes (with an exception on wave 3-5 in the same game), and it takes much longer to pop than in Bloons TD 4. In Bloons Super Monkey 2 Mobile, it first appears in a trio at level 55. In Bloons TD 6, its first appearance is in round 60, the last round of Medium Difficulty. It can become a Fortified B.F.B., parent of Fortified M.O.A.B.s, child of a Fortified Z.O.M.G., having a new health of 1400 HP (9,648 RBE)

When fighting it, it takes a large amount of hits to pop but the extremely slow speed compensates for that. Like the M.O.A.B., escaping will result in a game over since it deals 2,884 damage in Bloons TD 4 (3164 in Bloons TD 5), unless buying enough lives, using the Support Chinook ability or Healthy Bananas to earn sufficient lives to let the B.F.B. pass. Popping it rewards a total of 1525 Money, and releases 4 M.O.A.B.s.

Like the M.O.A.B., the B.F.B. has also 4 health stages. However, when you reduce 180 hits from a M.O.A.B. and a B.F.B., the M.O.A.B. layer is almost popped, while the B.F.B. layer has only little damage. When the B.F.B. layer is completely destroyed, it releases 4 M.O.A.B.s.

A BTD6 compatible Formula for a single B.F.B. is:

(700 [+700] +

4 &times; {200 [+200] +

4 &times; {10 [+10] + { 4 7 × 2 }  } } )

Bloons Super Monkey
The B.F.B. appears in Bloons Super Monkey as the last boss. It is almost impossible to pop the B.F.B. with only Death Ray Vision. The player may try using Quad MOAB and Death Ray together with Plasma (Multi and Super if necessary). It takes much longer time to pop it than in Bloons TD 4, in which it roughly has the RBE of 5 Z.O.M.G.s from BTD5. Only one appears in the game, but it is still a serious threat. If enough bloons aren't popped and it escapes, the game is lost. It is also the last enemy encountered. Instead of releasing M.O.A.B.s when popped, it will explode into a variety of pinks to reds. While being hurt, it will release low ranked bloons, such as Red Bloons.

Bloons Super Monkey 2
The B.F.B. appears again in Bloons Super Monkey 2. It first appears as a boss in stage 2-5, and one more appears in stage 3-5. It is very tough, taking 8000 hits before blowing in a very large cloud of bloons from Reds to Pinks. When hit, the boss B.F.B. spawns bloons from Greens to Blacks. It is so big you can understand how it could fit 4 M.O.A.B.s inside of it. (It does not spawn these in BSM2) it appears in stage 3-5 as sort of a "mini boss" to protect and guard the calamari blimp. If you looked at its size you could see about 10 Mini M.O.A.Bs inside of it. Also, in the health stages, on the third one, plaster appears.

Bloons Super Monkey 2 Mobile
The first B.F.B. appears in level 55 where there are a total of 3 B.F.B.s in the level, albeit not all at once. The B.F.B. also appears in later levels.

Bloons Monkey City
B.F.B.s appears in Bloons Monkey City as well. They appear in tiles, and their average difficulty is Very Hard but the easiest is Easy. However, there is a tile that has 2 B.F.B.s on it (Three B.F.B.s are shown on these tiles in BMC Mobile). These tiles are usually called "Packed B.F.B. Tiles" or "Double B.F.B. Tiles". This foreshadows a rush of B.F.B.s at the last round, or near it. This also makes B.F.B.s more common to spawn.

Bloons TD 6
TBA

Bloons Adventure Time TD
The BFB appears when playing a track on Extreme difficulty or higher, with the first one appearing on Round 53. The presence of its name is confirmed via Marceline's Eating Red upgrade description, as Eating Red is also notable for targeting specific ranks of bloons.

Bloons Pop!
"Huge, tough, and full of Bloons!"

- Short description

The Behemoth only appears on Level 16 or 20 in adventure events where it features in as a boss fight. Whenever it gets hit, it will spawn waves of various bloon types, from red to ceramic, even including regrow, camo, fortified, and shielded properties, it also sometimes creates obstacles such as bricks, all while progressively getting harder as its health depletes. After about 4000 points of damage, the Behemoth retreats. Unlike most bloons, the Behemoth consumes the whole bottom half space floating vertically, which prevents most projectiles from expiring at the bottom of the screen.

Unlike other BTD6 generation games, Fortified Behemoths do not exist in this game.

Bloons TD Battles 2
BFBs make a comeback in this game, and can be sent for $2,200 ($2,500 pre-1.0.4). Sending a BFB has an income penalty of 50 Eco. Spaced BFBs unlock on Round 20, while Grouped BFBs unlock on Round 22.

One natural BFB spawns on Round 30. Subsequent natural BFBs appear on later rounds.

Appearances

 * BTD4 generation games
 * Bloons TD 4
 * Bloons TD 4 Expansion
 * Bloons TD 4 (Mobile)
 * Bloons TD 4 (DSi)
 * Bloons Super Monkey


 * BTD5 generation games
 * Bloons TD 5
 * Bloons TD 5 Flash
 * Bloons TD 5 Deluxe
 * Bloons TD 5 Mobile
 * Bloons TD 5 Steam
 * Bloons TD Battles
 * Bloons TD Battles Flash
 * Bloons TD Battles Mobile
 * Bloons TD Battles Steam
 * Bloons Monkey City
 * Bloons Monkey City Flash
 * Bloons Monkey City Mobile (including Steam version)
 * Bloons Super Monkey 2
 * Bloons Supermonkey 2 Mobile


 * BTD6 generation games
 * Bloons TD 6
 * Bloons Adventure Time TD
 * Bloons Pop!
 * Bloons TD Battles 2

Round Appearances
The following are all appearances on each round where BFBs will spawn naturally from the entrance. These will not include the rounds where the BFB's parents or subsequent parents will feature.

BTD4

 * Round 60: 1 BFB
 * Round X: TBA
 * Round X: TBA

BTD5

 * Round 60: 1 BFB
 * Round X: TBA
 * Round X: TBA

Normal Gameplay

 * Round 60: 1 BFB
 * Round 65: 100 Zebra, 70 Rainbow, 50 Ceramic, 3 M.O.A.B., 2 B.F.B.
 * Round 68: 4 M.O.A.B., 1 B.F.B.
 * Round 72: 38 Regrowth Ceramic, 2 B.F.B.
 * Round 73: 8 M.O.A.B., 2 B.F.B.
 * Round 74: 50 Ceramic, 60 Fortified Ceramic, 25 Fortified Ceramic Camo Regrowth, 1 B.F.B.
 * Round 75: 14 Lead, 14 Fortified Lead, 3 Fortified M.O.A.B., 7 B.F.B.
 * Round 77: 11 M.O.A.B., 5 B.F.B.
 * Round 78: 80 Purple, 150 Rainbow, 75 Ceramic, 72 Ceramic Camo, 1 B.F.B.
 * Round 79: 500 Rainbow Regrowth, 4 B.F.B., 2 Fortified B.F.B.
 * Round 81: 17 B.F.B.
 * Round 82: 10 B.F.B., 5 Fortified B.F.B.
 * Round 84: 50 M.O.A.B., 10 B.F.B.
 * Round 86: 5 Fortified B.F.B.
 * Round 88: 18 M.O.A.B., 8 B.F.B., 2 Z.O.M.G.
 * Round 89: 20 Fortified M.O.A.B., 8 Fortified B.F.B.
 * Round 91: 100 Fortified Ceramic, 20 B.F.B.
 * Round 93: 10 Fortified B.F.B., 6 D.D.T.
 * Round 94: 25 B.F.B., 6 Z.O.M.G.
 * Round 96: 40 Fortified M.O.A.B., 30 B.F.B., 6 Z.O.M.G.
 * Round 98: 30 Fortified B.F.B., 8 Z.O.M.G.
 * Round 102: 3 B.F.B., 3 Fortified B.F.B., 1 Z.O.M.G., 3 Fortified Z.O.M.G. (last 2 are stacked), 18 D.D.T., 12 Fortified D.D.T.
 * Round 104: 200 Purple (2 groups of 100), 200 Fortified Lead (2 groups of 100) , 200 Ceramic (2 groups of 100) , 150 Fortified M.O.A.B., 25 B.F.B., 14 Fortified B.F.B.
 * Round 105: 25 Fortified Lead, 100 Ceramic, 300 Fortified Ceramic, 30 B.F.B.
 * Round 109: 15 Purple, 30 Fortified M.O.A.B. (15 groups of 2, stacked), 15 B.F.B., 15 Fortified B.F.B. (each stacked with a regular B.F.B.) , 15 Z.O.M.G.
 * Round 110: 25 B.F.B., 18 D.D.T., 12 Fortified D.D.T.
 * Round 112: 20 Fortified B.F.B., 18 Fortified D.D.T.
 * Round 113: 43 Ceramic Camo, 42 Fortified Ceramic, 50 Fortified M.O.A.B., 10 Fortified B.F.B.
 * Round 114: 24 M.O.A.B., 36 Fortified M.O.A.B., 12 B.F.B., 8 Fortified B.F.B., 5 Z.O.M.G., 3 Fortified Z.O.M.G., 9 D.D.T., 6 Fortified D.D.T. (D.D.T.s and Fortified D.D.T.s spawn throughout the round, then it goes Fortified M.O.A.B., M.O.A.B., B.F.B., Fortified B.F.B., Z.O.M.G., Fortified Z.O.M.G., Round 115 has them in roughly reverse order)
 * Round 115: 24 M.O.A.B., 36 Fortified M.O.A.B., 12 B.F.B., 8 Fortified B.F.B., 5 Z.O.M.G., 3 Fortified Z.O.M.G., 9 D.D.T., 6 Fortified D.D.T. (D.D.T.s and Fortified D.D.T.s spawn throughout the round, the rest goes in roughly reverse order compared to Round 114)
 * Round 116: 400 Purple, 18 Fortified B.F.B., 8 Fortified Z.O.M.G.
 * Round 120: 24 Fortified M.O.A.B., 12 B.F.B., 12 Z.O.M.G.
 * Round 121: 14 Fortified B.F.B., 28 Fortified M.O.A.B., 6 Fortified Z.O.M.G.
 * Round 122: 20 Fortified B.F.B., 40 B.F.B., 75 Fortified Lead
 * Round 124: 75 Fortified B.F.B.
 * Round 125: 6 Z.O.M.G, 42 B.F.B, 63 M.O.A.B.
 * Round 127: 48 M.O.A.B., 24 B.F.B.
 * Round 128: 39 Fortified D.D.T., 200 Fortified Ceramic Camo, 20 B.F.B.
 * Round 133: 12 Fortified M.O.A.B., 12 Fortified B.F.B., 4 Fortified Z.O.M.G., 27 M.O.A.B., 27 B.F.B., 12 Z.O.M.G.
 * Round 134: 12 Fortified B.F.B., 28 B.F.B.
 * Round 136: 96 Fortified M.O.A.B., 24 B.F.B.
 * Round 137: 18 Z.O.M.G., 24 B.F.B., 48 M.O.A.B.
 * Round 141+: randomized
 * Round 10,003: 100 B.F.B.

Alternate Bloons Rounds

 * Round 54: 35 Black Regrowth, 1 M.O.A.B, 1 B.F.B.
 * Round 57: 25 Ceramic, 2 Fortified M.O.A.B, 1 B.F.B.
 * Round 60: 1 Fortified B.F.B.
 * Round 62: 250 Purple, 15 Fortified Lead Camo Regrowth, 5 Fortified M.O.A.B, 2 B.F.B.
 * Round 64: 6 Fortified M.O.A.B, 2 B.F.B.
 * Round 65: 70 Rainbow, 50 Fortified Ceramic, 3 Fortified M.O.A.B, 3 B.F.B.
 * Round 66: 6 M.O.A.B., 3 B.F.B.
 * Round 68: 4 M.O.A.B, 1 Fortified B.F.B.
 * Round 72: 38 Fortified Ceramic, 1 B.F.B, 1 Fortified B.F.B.
 * Round 73: 8 Fortified M.O.A.B, 2 Fortified B.F.B.
 * Round 74: 100 Black Camo Regrowth, 25 Fortified Ceramic Camo Regrowth, 1 Fortified B.F.B.
 * Round 75: 50 Lead, 14 Fortified Lead, 4 Fortified M.O.A.B, 4 B.F.B, 4 Fortified B.F.B.
 * Round 76: 10 B.F.B.
 * Round 77: 11 Fortified M.O.A.B, 5 Fortified B.F.B.
 * Round 78: 80 Purple, 150 Zebra, 60 Fortified Ceramic, 72 Ceramic Camo, 1 Fortified B.F.B.
 * Round 79: 500 Rainbow Camo, 4 Fortified B.F.B, 1 Z.O.M.G.
 * Round 81: 15 B.F.B, 20 Fortified M.O.A.B
 * Round 82: 15 B.F.B, 8 Fortified B.F.B, 1 Z.O.M.G.
 * Round 84: 50 M.O.A.B, 15 Fortified B.F.B.
 * Round 86: 8 Fortified B.F.B.
 * Round 88: 15 Fortified M.O.A.B, 12 B.F.B, 3 D.D.T.
 * Round 89: 15 Fortified M.O.A.B, 12 Fortified B.F.B.
 * Round 91: 100 Fortified Ceramic, 15 Fortified B.F.B.
 * Round 93: 17 Fortified B.F.B, 7 Fortified D.D.T
 * Round 94: 25 B.F.B, 8 Z.O.M.G
 * Round 96: 20 Fortified M.O.A.B, 20 Fortified B.F.B, 10 D.D.T, 11 Z.O.M.G.
 * Round 98: 20 Fortified B.F.B, 11 Z.O.M.G
 * Round 101+: randomized

Strategies
The B.F.B. is the fourth highest ranked bloon to date. It is immune to glue in Bloons Tower Defense 5 and before, and the Ice Tower without the icicle impale upgrade (BTD 6 only), but it is also the third-slowest bloon in the game. Attention should always be focused on B.A.D.s, Z.O.M.G.s, B.F.B.s, M.O.A.B.s and D.D.T.s should they show up as they are serious threats. The Monkey Pirates has the MOAB Takedown Ability, which can pull a complete B.F.B.,regardless of its health. In BTD6, you can upgrade the tower to Pirate Lord, allowing the ability to pull 3 B.F.B.s instead. During later rounds (round 80+) multiple B.F.B.s show up in a single round, as well as multiple M.O.A.B.'s. One of the best ways to deal with B.F.B.s is to pile them with powerful towers such as Spectre, large numbers of MOAB Maulers, Technological Terror, or Temple of the Monkey God.

Quotes
"The B.F.B. The biggest and most feared bloon of all. All I can say is you better be ready..."

- Round 60 in Bloons TD 4

"B.F.B stands for Brutal Floating Behemoth. What were you thinking?"

- Round 67 in Bloons TD 4

"Enjoy that BFB did you?"

- Round 61 in Bloons TD 5

"A friend saw the MOAB in my trophy cabinet and bet me that I couldn't snare something bigger. Let's prove him wrong. I'm not going home until I've taken down a BFB!"

- Bigger Bloon hunter quest start description in BMCM

"Final round for Medium difficulty coming next. Congratulations! If you can pop the BFB Bloon, that is..."

- Round 59 in Bloons TD 6

Hero quotes
These quotes are always triggered upon encountering a BFB. Some quotes from heroes are identical to those for weaker or stronger MOAB-class bloons.
 * Quincy:
 * HeroIconQuincy.png "BFB incoming!"
 * HeroIconQuincyCyber.png "BFB incoming!"
 * HeroIconWolfpackQuincy.png "Run this one down!"
 * Gwendolin:
 * HeroIconGwendolin.png "BFB! Burn it!"
 * HeroIconGwendolinScientist.png "That.. looks very flammable!" (MOAB-Class Bloons appearance)
 * HeroIconGwendolinCircus.png "Should we be scared?"
 * Striker Jones:
 * HeroIconStrikerJones.png "Target that BFB!"
 * HeroIconStrikerJonesBikerBones.png "Show no mercy!" (non-BAD MOAB-Class Bloons appearance)
 * HeroIconStrikerJonesOctoJones.png "Nah-ha-ha-harr, a big one be this!"
 * Obyn Greenfoot:
 * HeroIconObynGreenFoot.png "BFB! Handle it!"
 * HeroIconObynOceanGuardian.png "They're getting bigger!"
 * HeroIconMountainObyn.png "We shall endure this!"
 * Captain Churchill:
 * HeroIconChurchill.png "BFB inbound!"
 * HeroIconChurchillSentai.png "Type 7 threat detected!"
 * Benjamin:
 * HeroIconBenjamin.png "Uh, guys?"
 * [[FIle:HeroIconBenJammin.png|24px|DJ Benjamin]] "Party crasher!"
 * HeroIconSushiBento.png "Big fish!"
 * Ezili:
 * HeroIconEzili.png "Danger, BFB!"
 * HeroIconEziliSmudgeCatt.png "Be careful, Smudge!"
 * HeroIconEziliGalaxili.png "Focus your energies."
 * Pat Fusty:
 * HeroIconPatFusty.png "BFB!"
 * [[FIle:HeroIconPatFustySnowman.png|24px|Fusty the Snowman]] "Don't be scared!"
 * Adora:
 * HeroIconAdora.png  "Be prepared!"
 * HeroIconJoanOfArc.png  "Prepare yourselves!"
 * Admiral Brickell:
 * HeroIconAdmiralBrickell.png "Fire when ready!"
 * HeroIconAdmiralBrickellDreadPirateBrickell.png "Look to the horizon!"
 * Etienne:
 * HeroIconEtienne.png "Tracking B.F.B!"
 * HeroIconETn.png "BFB identified!"
 * Sauda:
 * HeroIconSauda.png "Big, red, and slicy!"
 * HeroIconSaudaViking.png "An enemy red from battle."
 * Psi:
 * HeroIconPsi.png "Red is the color of destiny."

Trivia

 * The comment given on one of the rounds in BTD4 makes it obvious that some players might have thought that BFB stands for Big Fat Bloon, Big Freaking Bloon, or other such names.
 * In the BTD5 quest and Bloons Adventure Time TD achievements, the BFB has been jokingly callled "Big Friendly Bloon."
 * This may be a reference to the BFG 9000 from the DOOM series
 * In BTD5, there is a quest that is called "Big Friendly Bloon?". It requires you to pop a bunch of B.F.B.s before being completed.
 * This is super easy to achieve if you are in freeplay and have at least 1 Temple of the Monkey God.
 * In Hot Air Bloon the monkey on the main screen is seen with a B.F.B.
 * In Bloons Monkey City, the B.F.B. is called a Brutal Flying Behemoth.
 * It takes 288 sets of Road Spikes to pop a B.F.B, or 289 in BTD4.
 * It requires 70 M.O.A.B. Mauler missiles to pop its outer layer.
 * In Bloons Super Monkey 2, its third health stage suggests that the B.F.B. is living, however, this doesn't seem to be true.
 * In the first version of Bloons Tower Defense 5 Mobile, prior to version 1.1, Round 65 (the last Round for Medium) didn't have B.F.B.s, similar to older versions of the original version.
 * It only takes 1 4/1 Sniper Monkey to bring a B.F.B. to a standstill.
 * 999 B.F.B.s appear on Round 250, the "unofficial" final round of Bloons TD 4 (the B.F.B.s will go fast). The round can only be passed with huge numbers of Monkey Aces (and Sun Gods, which are optional).
 * The Apopalypse Mode icon in Bloons TD 4 Shows a BFB.
 * The B.F.B. has a mouth as shown in the Apopalypse mode on the Bloons TD 4 iOS.
 * The B.F.B. contains 1,524 bloons. (1,525 including itself.)
 * In Bloons TD 4, the monkey in the anti-monkey symbol is the same as the monkey from Bloons games.
 * In BTD4, if a B.F.B.'s outer layer is popped, the 4 M.O.A.B.s that spawn are on the opposite side of where they were originally facing, and then turn to their normal side.
 * A BSM2 B.F.B. has a higher RBE than a BTD5 Z.O.M.G.
 * A Super Monkey Storm deals 500 damage to B.F.B.s in BTD5, while Ground Zero deals 350 damage.
 * Some think it is invincible to darts, due to the "anti dart monkey" symbol; however, this is not true.
 * It is the symbol of the B.F.B. presumably due to the bloon power (health plus its children) that it has against the monkey force, noting that it is the most powerful bloon in BTD4 where it appeared first.
 * Only Lead Bloons and D.D.T.s are invincible to darts themselves.
 * Since July 2012, it was possible to pop infinite B.F.B.s with one use of the Ground Zero ability. However, after the March 26, 2013 update, this became impossible, as Ground Zero only dealt 500 damage,thus requiring two uses to fully pop B.F.B.s. As of September 29, 2013, Ground Zero was nerfed even more, making it only deal 350 damage, thus requiring two uses to destroy the B.F.B. layer, then another use to pop the remaining M.O.A.B.s, for a total of three uses.
 * The Super Monkey's Technological Terror ability can destroy infinite B.F.B.s as well as MOABs.
 * A B.F.B. has 918 layers of bloon, which is why Bloon Annhilation could destroy it in one shot (the ability does 1,000 damage).
 * It needs 64 piles of Road Spikes to pop the entire B.F.B layer.
 * In BMC the Z.O.M.G. tiles have the skull on the Z.O.M.G. avatar but the B.F.B. tiles don't have the Anti-Monkey symbol on the B.F.B. avatar.
 * The B.F.B., as with other assets in-game, in both BMC games uses the same design as its BTD5 counterpart of its respective platforms, and as a result the dart monkey in the Anti-Monkey symbol does not change to the design of the BMC dart monkey.
 * In Bloons TD Battles Mobile this is the only M.O.A.B. Class Bloon that has the same income penalty between its spaced and fast cooldown variants (-$140)
 * Z.O.M.G.s used to also be like this but this was changed in update 4.3.
 * In Freeplay Mode, no matter what round it is, an x/4 Monkey Buccaneer can take down a B.F.B. This means that even if a B.F.B. on Round 500 is right near the exit, one use of the ability will instantly pop it.
 * The "no monkey" sign on the B.F.B. is removed in BTD6 and replaced by two white crescent lines.
 * A joke that was made by Ninja Kiwi in BTD3 is "in BTD4, you will find a new blimp, the BFB. It stands for Big Fat Bloon."
 * Coincidentally, a popular animated YouTube series by the name of Battle for BFDI/BFB (as well as one of the major prizes) shares the same acronym with the bloon.
 * In BTD6, the B.F.B.'s becomes noticeably darker in color when damaged.
 * Compared to the M.O.A.B., it is 3.5x stronger, but when fortified, it is 7x stronger, as fortifying a M.O.A.B Class Bloon doubles (2x) its health.
 * Probrably the BFB and the BAD in BATTD were darker in color.