Soon afterward, he met and became romantically involved with Olga, Queen of the Bessarovian Cossacks. They were engaged for some time, but Olga refused to marry him until he could provide her with a suitable dowry, which provided him with a reason for returning to crime.
Not much else is known about Egghead besides a few personality tidbits. He never pays for anything and he eats nothing but grade triple A white eggs. He finds telephones irresistible. Also, he slips the word 'egg' into his sentences anyway he can, which often means the perverting of the English language. Some examples: excellent = Egg-cellent, experiment = Egg-periment, etc.
Benedict and Foo Yung- Egghead's "rotten eggs" who were under his employment during his attempt to gain the lease to Gotham City. Benedict resented the pressence of Miss Bacon because he felt "dames" didn't belong in crime.
Miss Bacon- Egghead's Executive Secretary in charge of writing down every word Egghead said. 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.
Chief Screaming Chicken- the Chief and the last of the Mochican Indians. It was Screaming Chicken's descendants who leased Gotham City to the Waynes, Tylers and Savages back in colonial times for the price of nine raccoon pelts. As the last member of his people it was his task to take part in the renewal of the lease which takes place every five years. This time, however, Chicken had other plans in mind.
Upset that his people had leased Gotham away for such a low price, Chicken was willing to work with Egghead to sabotage the lease ceremony. If the exchange of the pelts didn't take place as outlined in the Gotham City Charter, Gotham City would become the property of the Indians once again. Once that happened, he leased the city to Egghead for a much higher price-- $100 a month and all the eggs he could eat plus the sole rights to the import and export concession for all genuine American Indian blankets made in Japan.
Little did he know Egghead was more interested in the $29 million dollars in collected taxes sitting in the Gotham Treasury than running the city. When Screaming Chicken learned of this he began to have second thoughts about the deal he made. Egghead and his men tied Chicken up and left him behind for the Caped Crusaders. He was released by the Dynamic Duo and in time the citizens of Gotham forgave Chicken because he had been led astray by empty fantastical promises made by Egghead.
"That poor red-skin," said Batman when he learned the Chief had gone bad. Batman could understand why Chicken could do what he did. At one time in his life, Chicken worked as a bottle washer. He and his boss got into an argument and the boss told him "to go back to his own country". That planted the seed of anger.
At the time of all of these events, Chief Screaming Chicken was 60 years old, but everyone agreed he looked very good for his age. Before and after these events he was the owner of the Screaming Chicken Roadside Teepee.
Olga- at one time she was his fiance, and he clearly adored her. But their shared addiction to the criminal lifestyle led them to prison again and again. The current state of their relationship is not known.