Gia is one of the main antagonists of the season 8 episode "Max Jets" of the American Dad! cartoon show. She was a waitress that was eventually revealed to be a golddigger.
While the Smiths went to a restraunt with Roger's persona "Max Jets", Gia began to "fall in love" with in. But immediately that they know was that Gia only wanted Max for his large amount of money. There were signs such as being repulsed by his appearance and recording an obvious rap. Later, at the wedding, Max was poisoned by a piece of the wedding cake. It was revealed that she and Max's son (another one of Roger's persona's) were up to that to make away with the inheritage. From here on, she was never seen again.