Captain Tryla Scott was a female Human Starfleet officer and commanding officer of the USS Renegade. By the mid-24th century, she had attained the rank of captain faster than any other person in Starfleet history, which made her something of a legend.
In 2364, Scott met with fellow captains Jean-Luc Picard, Rixx, and Walker Keel at Dytallix B to discuss the infiltration of Starfleet Command by parasitic beings. However, Scott was subsequently infested by one of the parasites. While under its control, she attacked Picard and William T. Riker inside Starfleet Headquarters. Riker was forced to fire at her with a high-setting phaser blast, upon which the parasite fled her body. (TNG: "Conspiracy")