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Resonant Thieves are a group of powerful Hive Ultras, comprised of Knights and Wizards, belonging to the Lucent Brood. They are encountered as part of the Resonant Destruction Public Event in Savathûn's Throne World.
Resonant Thieves will appear while the Resonant Destruction public event is in progress, specifically at the Florescent Canal area of the Throne World. While ferrying the Resonant Splinter to its destination, there will be times when the path is blocked by a large bubble shield, where the Thieves, one Knight and one Wizard, will appear alongside several other Hive enemies. To disable the shield, participating players must destroy the Darkness Crystals power it and kill both the Ultras, as well as their reinforcements, before the Splinter can be guided closer to its destination. This process must be repeated twice throughout the course of the event when it is active at the Florescent Canal.
List of appearances