Ghost Bloon

Ghost Bloons are a new bloon property introduced in the 1.2 update of Bloons Adventure Time TD, much like the Camo, Regrow, Fortified, Shield, and Zombie bloon properties. Ghost Bloons distinguish themselves from normal Bloons by wearing ghostly drapes that feature sinister smiling faces, whereas MOAB-class bloons will show a full ghostly appearance over their bodies to indicate their Ghost property, as well as having a cyan-colored outline when behind an obstructing object.

They make their appearance in the Hall-Ooo-Ween event and in the Frozen Blades Adventure in Ice Kingdom. They are immune to physical attacks, making weapons like darts, bombs, and swords useless against them; Only energy, bubblegum, fire, and ice attacks, or any character with trinkets like Robo-Monkey Visor or Glob's Helmet can pop Ghost Bloons. Like any property, Ghost Bloons can also be combined with other Bloon properties as well. The Ghost property can also apply to MOAB Class bloons, with the exception of DDTs and BADs; Ghost MOAB-Class Bloons have a glowing white aura (with glowing eyes for BFBs and ZOMGs) to indicate they have the Ghost property, and they slowly turn to skeletons as they take damage. Currently, Ghost MOAB-class are only available in limited time events containing Ghost Bloons, such as the 2018 Hall-Ooo-Ween event or the 2018 Holly Jolly Secrets event. They are also seen in Promcoming and Frozen Blades on certain difficulties.

Tips

 * It is important for newer players to use Princess Bubblegum or Ice King to pop Ghost Bloons because these characters are unlocked very early on. Some characters are much more reliable against Ghost Bloons, but they aren't unlocked until much later in the game.
 * Princess Bubblegum is one of the best characters for moderating non-MOAB Ghost bloons, as she can be given the Super Intelligence upgrade to detect and remove Camo from Ghost bloons with that extra attribute. Her bubblegum attack also allows her to deal with Purple Bloons, Lead Bloons, and Thermal Bloons, so that other good Ghost Bloon attacking characters can function optimally.
 * If not properly prepared, MOAB-class Bloons with Ghost properties can make or break a game. With immunity to physical-based attacks, go-to MOAB destroyers like Finn or C4 Charlie will have no effect on the MOAB, while characters who can hit Ghost Bloons normally like Ice King or Princess Bubblegum will either deal minimal, or in the case of Ice King, literally no damage to the MOAB layer without expensive upgrades like Jellybeans Have Power and Big Freeze.
 * Some of the best ways to deal with these Ghost MOABs are to have Supermonkey with at least Laser Eyes and Flame Princess with at least Flamethrower. For allies, especially on Martian Games events with Allies Only, Technological Terrors are the best choice.
 * It should be noted that physical damage-based abilities such as Max's Bullseye and Jake's Tie 'em Up! abilities will not still damage Ghost MOAB-class Bloons.
 * To mitigate this, Tuxedo Jake's Inspiring Melody grants Ghost popping to all nearby towers whose attacks cannot pop Ghost already.
 * Hunter Marceline or any character equipped with Night Sword/Magic Man's Hat may gain Ghost popping power by sucking a soul from a Ghost Bloon.
 * Note that there are some trinkets and weapons that can allow a character that normally cannot pop Ghost Bloons to pop Ghost Bloons.
 * Fire Sword will allow sword users, who initially all use Sharp damage, to pop Ghost Bloons, though none can detect Camo Ghost Bloons without special items.
 * It is better to equip Fire Sword to Finn though, since Warrior Bubblegum's auto-spawned allies cannot pop Ghost Bloons even when she has the Fire Sword equipped, since this only applies to Warrior Bubblegum's main attack.
 * Dungeon Finn can also gain Ghost-popping power with upgrades such as Fire Crown.
 * Robo-Monkey Visor or Glob's Helmet allows the equipped character's ranged attacks to damage Ghost Bloons. This is mostly useful for characters like Max, Captain Cassie, Commander Cassie, Sai, and C4 Charlie.

Trivia

 * Ghost Bloons are the first non-MOAB Class Bloons that have faces on them (aside from the Bloon Spies and Bloon Sabotage Monkey Knowledge icons in BMC, which depict non-MOAB bloons with paper monkey masks and scribbled faces, respectively).
 * They're also the second bloon property that apply to MOAB Class bloons, the first one being Fortified.
 * Ghost Bloons can be considered as an opposite to Purple Bloons, as Purples are immune to energy and fire attacks, but Ghost Bloons can only be destroyed by those types of attacks, among a few others.
 * Characters or allies without ghost-popping damage will try to attack Ghost Bloons, unlike Camo Bloons, but their projectiles or melee attacks will simply pass through (read ignore) them, not get absorbed as Purple Bloons would for energy or fire.
 * Purple Bloons also cannot have the Ghost property, as players would find countering bloons with immunity to both physical and energy attacks too frustrating without specific high end items or upgrades.
 * The Ghost property, along with Fortified, is among the only bloon properties that Dr. Monkey's chemicals cannot remove. They can be removed by attacks from a character holding Booboo Sousa, however.
 * Files for Ghost versions of DDTs and BADs exist in the game files.
 * Sai with the Fridjitsu upgrade will still not be able to pop Ghost Bloons even though it is a freezing attack. However, this is because Fridjitsu does not deal freezing damage (i.e. Glacier, Cold, Metal Freeze, Metal Glacier Freeze), it only applies the freeze effect to bloons damaged by the shuriken.
 * Thus, Sai cannot pop a frozen Ghost Bloon with her projectiles, even though Fridjitsu normally will allow popping of Frozen Bloons.
 * Fridjitsu requires equipping the Dagger of Chilled Glass trinket, which, despite granting Black, Purple, and Frozen popping, does not grant Ghost popping to the equipped character.
 * C4 Charlie's Signal Flare ability still can remove the Camo property from Ghost Bloons, as do Anti-Camo Dust.
 * Damaged Ghost MOABs reveal skeletons resembling those of fish skeletons. They may also appear wrapped in bandages, which is notable because the BAD is the only other bloon with them.
 * If a ghost BFB gets affected by Marceline's Eating Red upgrade or Hunson Abadeer's MOAB's Terror upgrade (any Ghost MOAB), it turns completely white (black-and-white if damaged).