Arkady Darell is given far more of a "hero" role than was usual or customary for teenage-girl characters in ca. 1950 science fiction novels, so that her portrayal can be seen as somewhat pioneering in that respect.
She was born Arcadia Darell on 11, 5, 362 F.E. on Trantor and died 1,7, 443 F.E. Her father was Toran Darell II and she was the granddaughter of Toran Darell and Bayta Darell and was very proud of the fact, eventually writing a biography of Bayta.
Arkady was born on Trantor while her father, the electroneurologist Dr. Toran Darell II, was conducting research on the Second Foundation at the Imperial Library After the death of her mother in 365 F.E. when she was three, she and her father moved to Santanni, where her father worked with fellow electroneurologist Dr. Kleise. After five years on Santanni, her father returned to Terminus, where they lived at 55 Channel Drive in Stanmark, a suburb of Terminus City At the age of 14 she was precocious, romantic, and highly intelligent. When she overheard a conspiracy between her father, Pelleas Anthor and others, to track down the members of the Second Foundation, she decided to stow away in a private spaceship owned by her "uncle" Homir Munn, a librarian, to travel to Kalgan.
After some trouble on Kalgan with Lord Stettin she managed to escape, with the aid of Lady Callia and Preem Palver, to Trantor. There she eventually worked out a solution to the mystery of the Second Foundation's location. After the conclusion of the Stettinian War between the First Foundation and Kalgan in 377 F.E., she returned to Terminus. In later life Arkady become a famous historical novelist, writing the books Unkeyed Memories and Time and Time and Over about Kalganian society of the early Interregnum, although her best-known work remained her biography of her grandmother.