Enthralled hydralisks were hydralisks of the Maguro Brood enslaved by the Cerberus Program during the rule of Arcturus Mengsk. They had their nervous systems replaced with various mechanical augmentations in order to make them susceptible to Terran Dominion control. They are equipped with harasses that proved dangerous to Cerberus Program interns.
Enthralled hydralisks are part of the Dogs of War calldown for Arcturus Mengsk. When Mengsk uses the ability at 50 Imperial Mandate or above, it will deploy 10 hydralisks. These hydralisks are uncontrollable and will attack the nearest enemy target. They benefit from Dominion armor and weapon upgrades, and may have their damage increased by the Terrible Damage mastery.