Boiler

Boilers are large, corpulent Infested riddled with pulsating boils, which launches an Infested seed occasionally. When killed, it will burst and launch several Infested seeds that grow into spawn pods. Left unchecked, these spawn pods unleash a variety of smaller Infested to overwhelm their enemies.

Tactics

 * Boilers waddle into moderate range of a player and create 3 to 5 spawn pods around themselves once they are killed.
 * Once grown on the ground, spawn pods gestate for several seconds before bursting, randomly spawning single or multiple Chargers, Volatile Runners, and Leapers.
 * Spawn pods can be destroyed before gestation is complete.
 * Boilers, similarly to other Ancients, can extend one of their arms to reach their targets at longer ranges.

Variants
A special variant of the Boiler can be found in the final mission of the Stolen Dreams quest. Apart from having more hitpoints and its pus being colored blue instead of orange, it is otherwise identical to the standard Boiler.

Bugs

 * Mind Controlling a Boiler will cause it to launch large amounts of spawn pods, which can crash the game.
 * Boilers have no ragdoll, and thus cannot be affected by Nekros ' Desecrate.
 * Currently, the Boiler Eximus Codex page displays the same codex as the regular Boiler, however all Eximus Boiler variants are stuck within each other to the right of the regular Boiler.
 * The "Next" and "Back" buttons are non functional within the Codex entry.

Trivia

 * Boiler was introduced in the Operation: Mutalist Incursions event in Update 15.5
 * The Boiler has the highest health of any Infested enemy besides bosses.
 * The Boiler looks similar to and functions much the same as the Flood Carrier enemy from the Halo franchise. Both enemies act as breeding grounds for other enemies and, when killed, release this internal cargo.