- "I'm Ismar Brengle, one of Lord Grathan's "indentured" scientists. I'd like to make your destruction of this place highly profitable."
- ―Ismar Brengle
In 3646 BBY, during the Cold War, Brengle was tricked into slavery during the Cold War between the Galactic Republic and the Sith Empire by Lord Grathan with the promise of exciting research projects. Although initially delighted She soon came to realize she had been tricked into working for him. In an attempt to seek revenge against Lord Grathan Ismar Brengle wanted to steal plans for advanced cybernetic limbs, created by another of Lord Grathan's scientists, Lanniter Droge,which she hoped to sell to a contact for a large fee.
In 3643 BBY, Ismar met an Imperial spacer who was attacking Lord Grathan's stronghold. Pleased to see the destruction of her captors property Ismar Brengle asked the Imperial spacer to download the cybernetic's data from Lord Grathan's main computer. Having shut down three separate terminals to allow themselves to access the main computer, the spacer was able to download everything. Ismar was very excited and promised to pay the spacer for there help. The spacer later received a substantial reward for their help.
- Star Wars: The Old Republic (First appearance)