C.O.N.T.R.A.M.A.T.E.R.I.A.

The C.O.N.T.R.A.M.A.T.E.R.I.A., or Collision-Outstanding Negative Teralined Rage-fuelled Anti Monstrous Advanced Titanic Enriched Internalized Airship, is one heck of a bloon. It is the polar opposite of the M.A.T.E.R.I.A. See that page for details about the explosion. Its layer system is the opposite of its opposite. Its first layer is from 5000 HP to 4000 HP, it starts off with all its (fairly harmless) attacks, but with no modifier. Its longest stage, from 4000 HP to 1000 HP, is when it uses its primary and tertiary attacks and becomes Unstoppable. The next stage, from 1000 HP to 500 HP, is when it uses its secondary attack and becomes Resist. The final stage is from 500 HP to 1 HP, where it doesn't attack and is basically a BFB. Like its opposite, it contains 4 V.I.T.A.M.s, and thus has an RBE of 50440.

Attacks
Bloonzard: Calls in a frosty wind that freezes all freezable bloons and slows the ones that can't be frozen. It also slows the firing rate of non-ice towers by 5%, and increases the firing rate of ice towers by 15%.

Monkey Potion: Chucks some Monkey Potions around. Monkey Potions heal monkeys' health by 25%, as well as boost their range and attack speed by 20% for 15 seconds. Buildings are unaffected.

Bloonstruction Crew: Calls in some fairly nice bloons who repair a random building-y tower by 20%, health-wise.

Trivia

 * Despite being classified as a "Good Bloon", it does take away lives if it reaches the exit and is part of a deadly reaction with another bloon.
 * It does meet the fact that it does nice things when partly undamaged. It never tries to cause (much) pain.