Assault, Medic and Heavy Bloons

Those are bloons based on SAS.

Assault Bloon.
Moves as fast as a Green Bloon, has 20 HP, first appears at round 32. Once taken 10 damage, will speed up to Pink Bloon speed. Drops a Rainbow Bloon. It looks like a pink bloon-sized dark gray bloon holding a knife and an assault rifle.

Medic Bloon.
Moves as fast as a Blue Bloon, has 18 HP, first appears at round 32. Every 10 seconds, it will drop 2 medkits in random spots in the track in its range (300px). The bloon that takes the medkit will be healed by 200 HP. If the layer is at full HP, the bloon will get 1+ layer. Cannot heal Ceramics or up. Drops a Regen Pink Bloon. It looks like a pink bloon-sized dark gray bloon with a light blue + on it and carrying a lightning gun.

Heavy Bloon.
Moves as fast as a Red Bloon, has 22 HP, first appears at round 32. Every 2 seconds, it'll regenerate 1 HP. All attacks that do 2 or more damage will do 1 less damage to it. Drops a Shielded Lead Bloon. It looks like a pink bloon-sized dark gray bloon wearing a metal helmet and carrying an LMG.