Founding member and current field leader of the Manaan Special Warfare Group (MSWG). Gallo distinguished herself early in her service career during the by refusing to retreat after her company suffered significant losses to kolto raiders. Marshaling the remaining soldiers, her group slowed the enemy advance with guerilla tactics until a proper response could be mustered. The incident would later be cited as the final push needed to form the MSWG.
During the Sith Empire's invasion of Manaan Colonel Gallo joined forces with the Republic to prevent the Empire from taking kolto. When she boarded one of the imperial ships she was nearly killed by Major Cadmael Benthos Dosk who vented out the oxygen from the room she was in. Shortly after leader of Task Force Nova and Jedi Knight Arn Peralun who sabotaged the ship arrived and found her unconcious. They used the escape pods to get her to safety, but also leaving the kolto in the falling ship.
Gallo is known across Manaan as a hero, loyalist, and an uncompromising advocate of her people. Far from a diplomat, her time as leader of the MSWG has only hardened her suspicions towards offworlders and has resulted in the occasional interplanetary incident due to her candor. Gallo has refused several promotions, preferring to remain in the field to personally oversee operations.
Wen Gallo appears in the Republic storyline of Star Wars: The Old Republic: Legacy of the Sith. The player can choose a dark side option to let Gallo die in the falling ship and use the escape pods to save kolto.