Gaal Dornick is one of the main characters of the Apple TV+ series Foundation. Gaal is a brilliant mathematical prodigy from the repressed water planet of Synnax. Recruited by Hari Seldon, Gaal becomes an integral part of his plan to preserve civilization. She is portrayed by Lou Llobell, first appearing in the episode "The Emperor's Peace".
Gaal Dornick is the daughter of algae farmers but her true talents lie in mathematics. Unfortunately for Gaal, she is a native of Synnax where scientists are considered heretics and studying math is a crime. Nevertheless, Gaal was able to solve the Abraxas Conjecture, a mathematical proof that no one had been able to solve for five hundred years using Kalle's Ninth Proof of Folding. The solution led to her winning a contest held by Doctor Hari Seldon. Removing her prayer stones, Gaal left Synnax for Trantor where she would be safer than on her homeworld.
On Trantor, Gaal finds out that she will likely be arrested the following day; Hari's science of Psychohistory has predicted the fall of the Galactic Empire and Gaal is the only person who can understand the math to either confirm or debunk his claims. At the Tribunal, after having a chance to study Hari's Prime Radiant, Gaal confirms the prediction. Following the Tribunal, Gaal senses something is wrong on Trantor Station. Moments after, bombers sever the station from the Star Bridge, causing it to crash into the planet leaving millions dead. After deliberations from the Emperor, Brother Day, Gaal and Hari are exiled from Trantor to establish the Foundation on Terminus in an effort to safeguard civilization.
Onboard the slow ship to Terminus, Gaal assists Hari in preparing the colonists for settling their new home, as well as training alongside the crew. She develops a relationship with Raych Foss, which they hide from Hari since Raych fears that Hari would disapprove of relationships since they were a distraction from the work. Gaal begins to develop into a leader among the colonists, and others look to her for advice and guidance.
- Season One