Tia is a duck-like female alien, Queen of the Galaxy, and short-lived romantic interest of Launchpad McQuack.
Tia met Launchpad while visiting Earth as a child, spotting him while he was on a flight with his father Ripcord McQuack. Tia took Launchpad flying with her, and helped the young duck overcome his previous fear of flight. However, she was then retrieved by Gleeb, who transported Launchpad back to his father's plane and took the princess home. However, Tia never forgot about her childhood friend, and upon ascending to the throne decided she wanted Launchpad to rule alongside her as King of the Galaxy.
Tia traveled to Earth to collect Launchpad, and ended up bringing Darkwing Duck and Gosalyn Mallard along for the ride. Unbeknownst to her, Gleeb sought to manipulate her through Launchpad, and intended to remove his brain and replace it with a computer. Fortunately, his plan was discovered and thwarted, and Tia had him devolved as punishment. However, Launchpad decided not to accept Tia's proposal, but to return to Earth with his friends. Tia agreed, the two parting as friends, but has Darkwing and Gosalyn's memories of their encounter erased.