Darth Malak was modeled in part after Darth Vader from the original "Star Wars" trilogy. The game programmers wanted to create a Dark Lord of the Sith who would instill images of Vader's character without being a near-complete carbon copy; thus, Malak was given a cybernetic vocal implant, and the rest of his body was left alone.
Bastila Shan's character was originally meant to be Vima Sunrider, a young heroine from Dark Horse Comics' "Tales of the Jedi" series who is instructed in the ways of the Jedi in the series "Redemption".
Probable ancestors of characters seen in the films can be seen in this game or at least spoken of in literature. Examples include: Galduran Calrissian - Probable ancestor of Lando Calrissian; Cassus Fett - Probable ancestor of Jango and Boba Fett; Komad Fortuna - Probable ancestor of Bib Fortuna; Admiral Forn Dodonna - Probable ancestor of General Jan Dodonna. The wealthy Organa family is also mentioned early on in the game.
When captured by the Sith, you are asked the location of the Jedi Base. You can lie and say Alderaan while the base is actually on Dantooine. In Episode 4 of the Movies, while Princess Leia is captured by the Sith, she is questioned about the location of the rebel base. She lies and says Dantoonie to try and save Alderaan.