Bloontonium Bloon

The Bloontonium Bloon is a very strong bloon. When popped it releases 4 Titanium Bloons, and is immune to all towers with an upgrade that uses Bloontonium (Example: Darting Gun with Depleted Bloontonium Darts). It has 1000HP and requires explosives to pop (or towers near a Monkey Intelligence Bureau).

Abilities
Bloontonium Attack: Attacks nearby towers with bloontonium, dealing 5HP damage. Common attack.

Bloontonium Shield: Generates a black shield around itself, making it invisible for 3 seconds. Common ability.

Lead Spawn: Spawns 50 Lead Bloons. Uncommon attack.

Titanium Spawn: Spawns 20 Titanium Bloons. Uncommon Attack.

Camo Lead Spawn: Spawns 40 Camo Lead Bloons. Rare Attack.

Trivia

 * It is just a lead bloon with some drawings around it.