H.E.L.L.

The H.E.L.L. ( H eated  E nchanted  L iving  L egend) is one of the most feared blimps. It is a big orange BFB covered in flames. It has 90,000 HP and moves as fast as a ZOMG. It is immune to fire-based attacks and releases 2 A.T.O.M.I.C. after death. It has these abilities:
 * Solar Flare: Shoots 3 small fire bullets that split into 2 each. They pierce infinite towers and deal 6 HP damage.
 * Shadow Fire: Continuously shoots tiny dark-fire bullets that deal 2 HP damage each. It starts out by shooting 5 each second, but its maximum is 20 bullets each second a second later. Lasts 1.5 seconds.
 * Burning Souls: 10 souls will appear orbiting the H.E.L.L.. 2 seconds later, each of those souls will become either red or green one by one and then go towards the target. Red souls will do 4 HP damage to one tower and green ones will penetrate an infinite amount of bloons, completely healing them in the way (heals 500 HP for blimps).
 * Atomic Fire (Used when at 30% HP or less): Every tower 250px away from this blimp will take 1 damage every second. All abilities also do 50% more damage. Lasts until destroyed.

Trivia

 * The BGM for its boss fight is this remix of Nuclear Fusion.