Adi Gallia was a Jedi who sat on the Jedi High Council in The Phantom Menace and Attack of the Clones. You don’t see much of Gallia in the prequel films, but her character was featured in several episodes of Star Wars: The Clone Wars.
In The Clone Wars TV series Gallia, who was a General for the Republic Army, had storylines with Obi-Wan Kenobi, Anakin Skywalker, Eeeth Koth, General Grievous, Darth Maul, and Savage Opress.
You can see her in action in the video below.
Actress Angelique Perrin voiced Gallia in The Clone Wars and Gin Clark portrayed her in the prequel films. Gallia also appeared in one issue of the Mace Windu comic series as well a several Legends comic issues and novels.