Stella made her debut in "The Loose Screw". She is an elderly and somewhat senile superhero who has been fighting crime since her youth. Despite her feeble appearance, she was once the greatest heroine in the galaxy and the arch-enemy of the galaxy's former greatest villain, Mandrake the Malfeasant.
Starbella is a very feeble and possibly senile old woman who often says nonsensical things. Despite this, she is still a very heroic and competent crime fighter who, despite her mental state, is still a great superhero in peak physical condition.