U.M.B.R.A.

The U.M.B.R.A. ( U ncovered M ega- B limp of R apid  A nnihilation) is a M.O.A.B.-class bloon that once was one of the most feared blimps that the bloons created! Using it's energy-based attacks, this can be one of the most dangerous blimps all around due to its 8000 HP! It first appears at round 95 and moves as fast as a black bloon. His abilities are as the following: It looks like a black B.F.B..
 * Teleportation: Teleports a tower to a random location sacrificing 500 HP, if said tower is teleported to air or any other place it normally couldn't be in, it will be destroyed and refunded by its sell price.
 * Energy Field: Envolves a tower into a small forcefield making it unable to be selected (clicked), attack and defend (which means it is immune from outside danger, including radiation and fire) sacrificing 800 HP, but said tower will also lose 1 HP each second and 1 maximum HP every 2.5 seconds. This lasts 10 seconds.
 * Energy Phasor: Shoots a purple beam at a random tower, sucking 1 HP of it each second (and also making said tower unable to attack). Each 1 HP it sucks, it gains a permanent 1.5% speed boost. But this effect will be instantly cancelled if, during the time it is using the beam, the blimp suffers 150 HP damage. The beam can last up to 30 seconds (which means it can get up to a 45% speed boost at once!).

Trivia

 * This is an obvious reference of Umbra, the Shadow Jaguar.