Who is Tralala. from Last Exit to Brooklyn and what is their importance?

Tralala has worked as a prostitute since the age of fifteen. She differentiates herself from the other girls by claiming that instead of playing games with the men, she gets right to business. Her biggest assets are her large breasts, which she flaunts shamelessly. Her attitude makes her unpopular with the other girls, but Tralala seems to care for no one, but herself. In fact, this perhaps is her main characteristic. She has an inability to feel and fall in love.