I have occasionally built squads of bombers to drop unholy amounts of Anti-Creeper somewhere, and they can create a wonderfully large puddle of Anti-Creeper, but by the time I can manage to do that, I am filthy stinking rich and am simply cleaning up the last of the Creeper. (For reference on my skill level, I've completed the main campaign and a few dozen additional levels, of which about a half-dozen were in the hard-mode Tortured Space worlds.) The Horned King blames Creeper for things and chokes him when he thinks he isn't doing what he wants him to do. All Creepers must be destroyed first before the Brain of Cthulhu becomes vulnerable to attacks. Creepers do not respawn once they are killed. They orbit the boss at high speed, following it wherever it teleports to, acting as a shield of sorts. Creeper is intelligent and fiendish, and is loyal to the Horned King, but is also afraid of him due to his mistreatment towards him. Creepers are eyeball-like enemies that are spawned along with the Brain of Cthulhu in groups of 20. If you're trying to set up a base somewhere inside a pile of creeper, then the Strafers are (in my experience so far) faster and better at destroying Creeper, while landing a Sprayer (possibly backed by a Guppy or two carrying Anti-Creeper reloads) gives a much more steady supply of Anti-Creeper than the slow-moving bombers, once you've Strafed the Creeper down to reasonable levels. Creeper is the Horned King's right-hand lackey and the secondary antagonist in Disney's 1985 animated feature film, The Black Cauldron. The problem I have with Bombers is that I can't think of any purpose for them that isn't better served by Sprayers or Strafers. There's another flying unit, the Strafer, that simply shoots Creeper and destroys it. Sprayers are (occasionally mobile) ground-based turrets that shoot a steady stream of Anti-Creeper, while Bombers are, well, bombers: they pick up Anti-Creeper at a landing pad, then drop it wherever you want it. There are two delivery methods for this miracle material: Bombers and Sprayers. It mutually annihilates any Creeper it touches.In Creeper World, there's a marvelous substance called Anti-Creeper that is exactly the same as the Creeper that's trying to kill you, with two key differences that make it great for holding territory: