T.R.I.C.K. or T.R.E.A.T.

is a pair of blimp that appears together on Halloween.

T.R.I.C.K.
The Trick Relishing Immediate Cruel Killer is a blimp that likes tricks. It has 40000 HP and is as fast as a green bloon.

Glue Splatting
Shoots glue at 2-3 towers, disabling them for 10-20 seconds. Cooldown: 30 seconds after all towers' glue has worn off.

Projectile replacement
Replaces 2-3 nearest towers to shoot different projectiles: Cooldown: 5 seconds
 * Heart Candy: Heals whoever is hit with it. (30%)
 * Water: Nudges the whoever hit with it front or back by 10px. (20%)
 * Glue: Disables tower for 3 second, doesn't stop Glue Gunner. Acts like a 0/0 Glue. (20%)
 * Bloon: Launches an extra bloon on the track. Limited to be Pink or below. (20%)
 * Bomb: Disables tower for 5 seconds, dealing 5HP damage to them. (10%)

Ghost
Spawns a fake ghost for 10 seconds, scaring all living towers and stunning them for 20 seconds, and giving them horror effect.

Cooldown: 25 seconds

T.R.E.A.T.
The Treat Relishing Eager Award-loving Titan is a blimp that likes treat (to be given to himself). It has 80000 HP and moves as fast as a Red Bloon.

Bananas (Passive)
Steals Bananas from Banana Farm and raging nearby towers in a 100px range, giving them Rage effect.

Free Projectiles
Collects all solid projectiles shot to it for 5 seconds, then shooting them back with the same projectiles. Cooldown: 40 seconds

Assistance (Passive)
Gains buffs given by towers like Monkey Village, which Attack Speed lowers it's cooldown, Money gained on poppage increases the Lives it take when it escapes, etc.

On Defeat
There are some effects depending which Blimp you killed first.

T.R.I.C.K. First
You have chosen Treats to be your effect. It takes away all your money and half of your lives.

T.R.E.A.T. First
You have chosen Tricks to be your effect. It sets and locks your tower's sell price to 0, and increases your tower's purchase and upgrade cost by 20%.

At the same time
You have tricked and tried to choose neither of the effects. However, it will spawn 10 Ghosts that will last forever, haunting you and your towers.

Trivia

 * Halloween Special
 * I have a feeling that I will be criticized