Miss Bacon was Egghead's Executive Secretary in charge of writing down every word Egghead said.
History
She was forever telling him to slow down when speaking. It was obvious she and Egghead were romantically involved. She had many pet names for him, Eggy being the most often used with affection. With her share of the money they stole from the Gotham Treasury after becoming owners of the city, she hoped to go to Rome and Greece, and get herself one of those guards from the Buckingham Palace, one of those that "doesn't blink when you tickle them". Her plans were cut short when Batman and Robin caught up to Egghead and his companions at Old MacDonald's farm.