Monkey Ace

The Monkey Ace is a monkey in a biplane that fires a volley of eight darts. It flies around the map, and has some great upgrades.

Rapidfire: $600
Increases the rate of fire of the Ace.

Sharper Darts: $450
Darts can pop eight bloons each!

Never-miss Targeting: $1870
Darts will now hunt down the bloons!

Spectre: $14600
Flying fortress of bloon doom.

Pineapple Express: $170
Every three shots, the Ace will drop a Pineapple!

Spy Plane: $300
Can spot camo!

Operation: Dart Storm: $2500
Our darts will block out the sun...

Ground Zero: $11900
Ground Zero Attack: Drops a devastating bomb that wipes out the whole map.

Trivia
Path I upgrades it to a modified C-130 Hercules cargo plane, while Path II upgrades it to a B-2 Spirit stealth aircraft.

There is a bug with the Ground Zero Attack; it is supposed to do 1000x Damage to M.O,A.B.-Class Bloons, similar to a Super Monkey Storm. It doesn't have this affect.