Lieutenant Torres is the Enterprise-D flight controller who draws a phaser on Q during the entity's first visit to the bridge and is frozen solid for his trouble.
Torres appears in Encounter at Farpoint. He is at the conn when Q first materialises on the bridge of the newly commissioned Enterprise-D and orders humanity to go back where it came from.
As Q lectures Picard, Torres quietly rises from his station and reaches for a phaser. Q notices and freezes him where he stands, leaving him encased in frost. Picard protests at the treatment of his officer, and the stricken man is rushed to sickbay, where he is revived.
The incident is the crew's first demonstration of how casually Q can use his power, and it shapes Picard's cautious handling of him from then on. Torres is not seen again after the Farpoint mission.