Tanya "Gertrude" Vanderflock is the tetartagonist of the show. She is the teams' tech-support. Tanya is good with machines and electronics and uses the Omnitool device on her wrist to help the team in many things.
Tanya is the Ducks' resident genius who is often the one turned to for advice, even by Wildwing. She is good a repairing and creating machines for the group to use in their fight against evil. Tanya has even repaired Drake DuCane's mask on one occasion after it took a direct hit from a saurian laser.
Despite her intellect, Tanya has bad allergies, lacks confidence, has a gentler personality, and is not as good a fighter as the other ducks. She makes up for this with her good common sense and wry humor.
Tanya developed a fear of dinosaurs after encountering some brought to life by Lord Dragaunus in the episode Jurassic Puck. By the end of the encounter, she overcame that fear.