This article or section contains information derived from Co-op Missions, and should not be considered part of the official StarCraft storyline.
"Program scientists requested that the Mutalisk's aviary be large enough to study their natural behavior. Facilities found themselves more concerned with the alarming number of crew member disappearances."
Enthralled mutalisks are part of the Dogs of War calldown for Arcturus Mengsk. When Mengsk uses the ability at 75 Imperial Mandate or above, it will deploy 10 mutalisks. These mutalisks 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.