From Hiya Toys. A PREVIEWS Exclusive. The Boiler is a Xenomorph caste, first encountered by the Colonial Marines from the U.S.S. Sephora on LV-426. It possesses a unique form of attack, whereby it will forgo the typical melee or spitting attacks used by other Xenomorphs in favour of suicidally rupturing its own body, drenching nearby targets in huge quantities of acidic blood. The Alien Boiler stands approximately 4" tall comes with an egg, a face-hugger and three sets of hands.