He was cheated by Estragon's assistant Vash after he paid for information about the Tox Uthat. He believed that Jean-Luc Picard conspired with Vash, and confronted Picard and Vash as they were leaving the hotel to look for the Tox Uthat. Picard disarmed him and knocked him out. Sovak later found them in a cave and ordered them to dig for the relic. Picard eventually found the Uthat and destroyed it to keep it out of the Ferengi's hands, and to keep it from the Vorgons.
His mirror universe counterpart appeared in the novella The Worst of Both Worlds. He was a rival of his fellow archaeologist-for-hire, Luc Picard. On September 28, 2371, Sovak followed Picard to the ruins of a Vulcan monastery on New T'Karath so that he could procure the second fragment of the Stone of Gol for himself with a minimum of either effort or risk. However, when he attempted to remove the fragment from the sarcophagus, he inadvertently activated a trap left by the ancient Vulcans, namely a gravitron inverter which caused his body to liquefy. As the trap had been triggered, Picard was able to safely retrieve the fragment, which he presented to his patron GulMadred, the governor of the Klingon-Cardassian Alliance world Celtris III.